Tysons biggest flaw imo is that he couldnt deal with speed himself. most of the guys he beat easily were slow to bring there punches back, and Tyson had no problem getting underneath a slow jab, right hand, or a wide hook. Tillis showed that a fast, solid jab was the way to beat Tyson. Lewis had the right punch to beat Tyson, no doubt, but It would be a case of how he dealt with the pressure of Mike and if he could weather the storms.