You have seen the comments of most boxing fans so I guess you know who the favourite is.
So it's really up to you, there are bettors who loves to go to the underdog specially if the odds are very attractive. But if you are a fan of Tyson they definitely it's a good bet as someone has said that the odds are good. But you have to check the sport bookies, most of the time the odds are changing as the fight gets closer.
Basing from what most of the comments it surely dictates that most if not all are favor with Mike.
But likewise there are gamblers also who loves to take some risk if the odd are very tempting. It's up to you to decide though as a fan or as a gambler who loves adding excitement. Consider also that the fight is unpredictable since both fighters are no longer active for such a long time and even they've got enough time to condition themselves still far from how they've fight when they are still at their prime. Good luck!