It would be a very tough fight for Fedor, as great as he is Fedor is almost 40 and Mo is a great athlete with great wrestling and KO power. If Fedor can make quick work of him, I'd be impressed. Stylistically it is really intriguing thinking about it, Mo should be able to get Fedor to the ground but can he keep him there or stop him from submitting him? Fedor could easily KTFO of Mo too, I could see Fedor getting caught too like he did against Hendo.