In 1985-86, which was his better of his two championship seasons, here’s how he fared (in 30 minutes of playing time per game):

Points
10.7 points per game
Ranked 5th on the team

Rebounds
2.9 rebounds per game
Ranked 6th on the team

Assists
5.1 assists per game
Ranked 29th in the league
Ranked 3rd on the team

Steals
1.2 steals per game
Ranked 47th in the league
Ranked 3rd on the team

He was a meaningful part of those championship teams, for sure. But it’s not crazy to argue that a team that had 4 Hall of Famers in the prime of their careers would have won the championship with lots of other starting shooting guards by their side.