Perhaps being on a team where he isnt relied on to be Mr. Everything and he has other guys he can count on defensively to make plays aswell helps a bit? Along with a better defensive scheme and a better overall coach.
Theres that, but theres also many plays where he avoids fouls at all costs and just lets his man go by him trying to avoid contact at all costs. If he doesnt stop that this year then there is definately something very very wrong. His individual D needs to go from cellar to above average this year for us to win a round, not to mention his help d which was average at best the first 3 qtrs, where in the 4th qtr he seeemd to step it up a bit in a lot of games. He should be able to do it all game now that he has JO beside him.