Bruce hesitates, taking in that and all its implications, especially after what Tony showed him today, this formula. Tony's belief that he isn't as good as, say, Steve. His fascination with the Hulk. Why Tony might envy someone being twisted into something else -- Steve didn't really get a raw deal, though Bruce doesn't think immortality is all that great -- Bruce doesn't really understand.

"Better, huh?" He picks his head up so he can see him, and it's pretty clear he's trying to see through something. They've been dancing around this; it's time to actually talk about it.

"Like super serum better?"