Or we are just not looking at advanced enough stats. NBA front offices, with the benefits of sportsvu cameras, can tell if shots are closely contested or not and analyze rebounding position to try to eliminate some of the noise from stats (amongst countless other analyses). This is where the "eye test" and analytics can be symbiotic - if you are seeing things that the stats don't explain, it's possible to refine and advance the stats to more accurately capture the events on the court.