His biggest problems imo are his balance and that he doesn't gauge or control distance well at all. Falling into attacks is a good way to put it, he often reaches with his jab when he isn't even in punching range, and winds up with all his weight forward and hands down. If he could have been more patient, developed his jab as a weapon and not just trying to set up the right with it, learned to counter better, then he would have been hard to beat. As it stands I think chin aside his ability is way overrated by some.