JMM needs to add weight the right way. Mackie Shilstone helped Michael Spinks train for Larry Holmes, RJJ for Ruiz, and Hopkins for Tarver. If JMM just comes in heavy and sluggish, PBF will win. However, if JMM puts on the right kind of weight, he has a good chance to beat PBF.
I was just thinking about this earlier today. He never going to fight below 140 again so I think he can add a little muscle. Not a lot but a little would not hurt.