Dwight is way too mechanical to be compared to Shaq/Wilt. Don't get me wrong, his defense is all-time good without question (or at least it will be), but his offensive game is way below par.
I feel for him because he is expected to lead the team and he does on the defensive end, but in the end he is basically the fourth scoring option on the team behind Hedo, Lewis and Nelson. He'd be a scary player if he possessed a jumpshot or even a little finess.