Rudy Gay offers shot blocking? So what. His defense is actually awful, and nowhere near as good as Deng's. Sure he's more athletic, but what does he provide that Deng doesn't? Nothing.
This season, Deng is averaging 19/7/3 on a 56.7ts% and 52.5efg% (while being only 9/27 from three - very impressive).
Deng is scoring 19.1ppg on only 14.9fga
Gay is scoring 20.3ppg on 18.6fga
Meaning, Gay has to take an additional 3.7fga to score only 1.2 more points. that makes me laugh that anyone thinks he's better than Deng.