Sully looked like a polished post player and impressive rebounder. Kris Joseph is a scorer, he is a really good slasher and from the last 3 games he showed a great shooting touch, I really like him( I would be shocked is he does not stick with the C's).
ET is a good scorer and shooter, but he is a weak defender. Jajuan looks like a D League long term project.
Here is the scoop on Melo, the kid is new to basketball therefore he almost never played pick up ball in his youth so asking him to perform well in the unorganized style of summer league is too much. But he is an athletic Center, and should perform exponentially better in a structured defense. Melo strikes me as a player that needs a system to function well, his basketball IQ is not high enough to just wing it.