Yet the question still remains, is this a guy you can win some big games with? I'm not convinced. There's still some glaring flaws.
I think the game clinching turnover reputation he's garnered isn't entirely his fault, but it's not all not his fault either. He simply hasn't shown that he can stand in the pocket and beat you, which what QBs need to do in the 4th quarter to either hold onto a win or come from behind. He'll hold onto the ball too long, be a little loose with it or just make a bad throw far too often.
Bottom line is that if he were going to be an upper echelon passer, he'd have shown more of it by now. He's shown to be an upper echelon weapon and athlete but not quarterback, and that's going to cap him around where Jay Cutler was, most likely: average QB that's mistake prone and doesn't come through in the clutch.