I know this has been discussed but want to put it out there again. My observation is defensive set-up has little to no effect. I am aware of all the factors involved but taking it all into account it appears it is not weighted enough. -3   zones allow opponents' big men to score 70% of their points.A DI  PF or C rated  75 LP and 20 per scores  20 + points. Likewise a +2 zone allows backcourt players  to score  over 40 points of team 62 point total. Has gotten so frustrating  I  play balanced zone and don't even try to analyze other teams tendencies.