Not surprised by the answers so far. In truth, I'd probably pick Bradley too. But when you compare the two players, the one thing we do know about sully is that he has a true position and can excel as a rebounder. I'd think he peak is a poor mans Kevin Love, which is pretty [dang] good. He he also a big, which are premium compared to guards. Bradley, on the other hand, is still an undersized SG with very little offense.
That said, Avery is truely special on the defensive end. I like them both very much and it would hurt to lose either. But as they say, you gotta give to get.