i never said he wasnt a good defensive player, but i did say many times over that he isnt as complete a defensive player as others.
his weakside defense is less than impressive. also, last season he led the team in both foul outs and overall number of fouls. this naturally happens with a shotblocker, but at the same time, the weapon can be a liability. his SEC DPOY skills do no good sitting on the bench with 15 minutes left in the first half because of 2 quick fouls.
he is an absurdly great shotblocker. and just as good, he make people change how they attack the rim and post up in the paint. he causes the other teams problems, and that makes him a dangerous defender.
and that overshadows his weaknesses.
the guy is one of the best matchup problems on D that i can remember in college though