No way. Floyd was too big, too fast, and too skilled to lose to JMM. I only see significantly larger boxers, or extremely durable/rugged/conditioned fighters beating Floyd. Guys like Leonard and Hearns who were great boxers and much larger than Floyd, or Roberto Duran/Henry Armstrong/Aaron Pryor types who would maul Floyd were the only types I see beating him. Even then, those guys couldn't afford an off night or lapse in focus or Floyd would beat them. I don't like the guy at all, but he was a fantastic talent and fighter.