It's true that Sullinger looks tres large.
but he also makes beating these guys look terribly easy in a way that Zeller and Lee absolutely did not.
Nice to verify that he can still reach the rim as well.
He's doing it when the game is already kinda out of reach, so it's fair to question how much defensive pressure he's facing -- whatever that even means against this team.
In any case, the issue with Sully has been his ability to look that good for the whole game. We know he can produce in short stints off the bench.