I think that's taking it a bit too far...
A Bust?
Beating up some scrub centers? Did you even watch Enes manhandled Bynum last year? Both offensively and defensively too.
I'm as down as anyone else here about his performance. But to say he's a total bust ala Millicic is a bit much. He's shown that he can play at a high level. He just needs proper coaching and support which I just don't think is there at the moment. We'll see if KOC can crack the whip and get Corbin & Co. on it ASAP.
Street smart/attitude
I think Phil Johnson said it best in an interview. Kanter didn't grow up playing basketball like most kids. He didn't just pick up a ball and join pick up games. He "learnt" basketball. The upside to that is his shooting form is technically perfect. But he lacks that natural instinct that most Americans kids have growing up playing bball. I think that could be why he sometimes looks lost on the court. He needs someone to be telling him constantly what to do, where to go, what plays to run, etc. That's why I just don't think he's suited to this Summer League environment where you have guys wheelin' & dealin' at will, no structure no nothing (well at least less than a typical NBA game).
Bottom Line
He needs 1 more go-to move, like a jump hook, or a running jump hook - to go with his up & under. That's on the coaches to teach him that and let him practice it and use it in a real game. The size, the talent is there. He just needs some support around him to utilize that talent.