Hard to go against the Tyson of 1989, although Tua being the same style and taking a good punch could be tough. Tyson had more punches to land than Tua but Tua's left hook is better than Mikes just as a single punch. But I pick Mike by 4th round knockout in a grueling fight which might have taken the fight out of Mike. Why Tua is going so slow in his comeback is odd. If he was confident he would be going full throttle, and the fact is his style is good against guys like Klitchko or Maskaev.