For a guard, shooting 45 % is quite good.
For a post player, shooting 60% is quite good.
If this is true, and I think it is,
(http://www.nba.com/statistics/player/FieldGS.jsp?league=0...)then I think a stronger IS rating should be expected, since the ratings are not calculated relative to one another.
Also, while I agree that a big man's ability to receive the ball is important, to claim that passing is "ridiculously simple" makes me wonder why there are very few Steve Nash's and a lot of Mike Conley's.
Once I scored a basket that still makes me laugh.