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NBA player comparison

George Johnson vs. Jan van Breda Kolff: 1978–79 season

hussEyquation1978–79 season · regular-season impact
Regular-season verdict

Jan van Breda Kolff leads in impact for 1978–79

Jan van Breda Kolff ranks ahead of George Johnson in estimated impact while playing. This compares regular-season performance, not total contribution across the season.

Impact comparison

Impact estimate is measured in points per 100 possessions above league average. Zero is average; higher is better. Impact Rate rank is a league place, not a 0–100 score: No. 1 is best.

+0.3Impact estimateEstimated points per 100 possessions above league average · higher is better+0.5Leads
#78Impact Rate rankLeague place · No. 1 is best#69Leads
67Games80
1,157Minutes1,998
6.2PPG6.7Leads
52.6%TS%53.4%Leads

Jan van Breda Kolff's estimated impact per 100 possessions was +0.5, compared with +0.3 for George Johnson. This compares their impact while playing, not their total contribution across the season. Both players are compared in the 1978–79 season using its published Impact Rate. A ranked comparison requires at least 450 minutes for each player.

George Johnson: 67 games and 1,157 minutes. Jan van Breda Kolff: 80 games and 1,998 minutes. Playing time matters when judging the whole season; the impact estimate above is a rate, not a season total.

Read turnover rate alongside offensive workload. Offensive usage measures the share of team plays a player ends with a shot, free throws, or a turnover while on the court—not every touch, pass, or act of playmaking. These rows provide context; they are not extra points added to the ranking.

Regular season only. Impact figures are estimates; small gaps are not exact. Playoffs, awards and titles do not determine the verdict.

1978–79 season · regular-season impacthusseyquation.com/compare/george-johnson-johnsge03/jan-van-breda-kolff/1978-79

Behind the estimate

Why the model rates them this way

A verified breakdown of this season’s published estimate is unavailable. We do not substitute another season’s calculation.

What this does not establish: these figures do not prove that either player made his teammates shoot better. A verified teammate-shooting comparison is unavailable for this selected season. A small difference in the estimates is not a decisive basketball distinction.

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Full comparison · 1978–79 season

Understand the numbers

Start with impact, then compare playing time and skills. Team results add context. These are not categories to tally into a winner.

1 · Ranking evidence

Impact: who ranks higher, and why?

The impact estimate compares performance while playing, not total contribution over the season. The individual-stat estimate plus the lineup adjustment gives the final estimate.

Impact: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
Impact estimateEstimated points per 100 possessions above league average · higher is better+0.3+0.5Better result for this metric.
Impact Rate rankLeague place · No. 1 is best#78#69Better result for this metric.

George Johnson: verified lineup window unavailable. Jan van Breda Kolff: verified lineup window unavailable. The adjustment is not necessarily based on this season alone.

2 · Playing time and responsibility

How much did each player take on?

Read games and minutes alongside impact. Offensive usage is the share of team plays a player ends with a shot, free throws, or a turnover while on court. More usage is not automatically better.

Playing time and workload: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
Games6780
Minutes1,1571,998

3 · Individual skills

Where does each player have an advantage?

These figures describe the selected regular seasons. They provide context, not extra points added to the verdict. Green marks the better result for a metric, including lower turnover rates. Workload and shot-selection measures stay neutral. These rows are not votes toward the ranking.

Shooting

True shooting includes two-pointers, three-pointers, and free throws.

Shooting: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
True shooting percentage52.6%53.4%Better result for this metric.
Show more stats: Shooting
Shooting: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
Field-goal percentage48.2%Better result for this metric.46.3%
Three-point percentageUnavailableUnavailable
Free-throw percentage71.8%79.8%Better result for this metric.

Passing

Assist rate is the share of teammates’ made shots assisted while the player is on court. Read turnovers alongside offensive workload; lower turnover rate is generally better.

Passing: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
Assists per game1.22.3Better result for this metric.

Rebounding

Rebound rate is the share of available rebounds collected while on court.

Rebounding: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
Rebounds per game5.4Better result for this metric.4.8

Scoring

Points per game describe scoring volume, not overall impact.

Scoring: George Johnson and Jan van Breda Kolff
MetricGeorge JohnsonJan van Breda Kolff
Points per game6.26.7Better result for this metric.

4 · Team context, not ranking inputs

What happened with and without them?

A verified with/without comparison is unavailable for this scope. We do not substitute another season’s observations.

Four separate questions

Impact, winning, playoffs, and awards

These are different ways to understand a career. Only Regular Season Impact determines the hussEyquation verdict. The other three sections add basketball context without adding points or changing the rank.

Ranking result

Regular Season Impact

Jan van Breda Kolff leads in impact for 1978–79.

George JohnsonMetricJan van Breda Kolff
+0.3Impact estimateEstimated points per 100 possessions above league average · higher is better+0.5Leads
#78Impact Rate rankLeague place · No. 1 is best#69Leads

This is the ranking result. It uses regular-season impact only. Team records, playoffs, and awards do not change it.

Context

Team Success

George Johnson leads every available measure below.

George JohnsonMetricJan van Breda Kolff
290LeadsListed-team regular-season wins234
44.2%LeadsListed-team winning percentage40.8%
1Leads50-win team seasons0
060-win team seasons0
3Playoff team seasons3

Context only. Not included in Career Impact Rank. Final records for every listed team-season. A traded season can include more than one team.

Context

Playoff Résumé

George Johnson leads every available measure below.

George JohnsonMetricJan van Breda Kolff
2Playoff appearances2
7LeadsPlayoff games4
8LeadsTeam playoff wins0
0Finals appearances0
0Championships0

Context only. Not included in Career Impact Rank. Team playoff results count only seasons when the player appeared in a playoff game.

Context

Awards

No recorded measure separates these careers.

George JohnsonMetricJan van Breda Kolff
Not availableAll-StarNot available
Not availableMVPNot available
Not availableAll-NBANot available
Not availableAll-DefenseNot available
Not availableDPOYNot available
Not availableRookie of the YearNot available

Context only. Not included in Career Impact Rank. Major regular-season honors are recognition, not inputs to the impact ranking.

How each context field is counted
Listed-team regular-season wins
The sum of each listed team's final wins in every season the player represented that team.
Listed-team winning percentage
Those team wins divided by those teams' total regular-season games.
50- and 60-win team seasons
Listed team-seasons that finished with at least 50 or 60 wins. Shortened seasons are not projected to 82 games.
Team seasons reaching playoffs
Listed team-seasons in which that team qualified for the playoffs.
Playoff appearances and games
Postseasons and games in which the player appeared.
Team playoff wins
Team wins from those postseasons. They describe team results, not individual credit.
Finals appearances and championships
Seasons when the player appeared in the playoffs for the finalist or champion.
Awards
Recorded NBA selections and major regular-season honors. A zero means the source records none; Not available means the source field is missing.

Source and scope Basketball Reference, NBA seasons 1950–51 through 2025–26, accessed 2026-10-09.

Selected seasons

Box impact

Both bars show the same NBA season. Missing or unqualified data does not establish a winner.

George JohnsonJan van Breda Kolff

Estimated points per 100 possessions above that season's league average

1
Both bars show the same NBA season. Missing or unqualified data does not establish a winner.