I decided shortly after that last post that including turnovers and shot attempts to positively reflect on a player’s value is a stupid idea. So, I’ve changed the calculation somewhat. Instead of using “touches”, I am now using “valuable contributions”:
This win share measure just sits better with me. Given two players on the same team equal in every way except turnovers, I do not want to credit the player with the greater number of turnovers with a greater contribution to team wins.
This new formulation does not change the rankings very much:
Yes, that does mean that James and Bryant were responsible for almost a quarter of their teams’ wins. Given that, and given that the Cavaliers had a better record than the Lakers, I would suggest that LeBron had a more productive season. This does not adjust for quality of competition, but eight more team wins is substantial.