I think people are heavily overrating Chael's wrestling because he's fought all non-wrestlers. Name ONE NCAA or even top high school wrestler Chael has fought in his entire career?
The closest thing was Okami, and he is nowhere near an NCAA caliber wrestler let alone a Div I champ.
The way I see it, Chael's wrestling is so good that he can dominate all non-wrestlers (especially those without an elite guard to save them once they get taken down). BUT it only looks so much better than the other wrestlers because unlike other them he sticks to his strength, not because he's so far ahead of the other elite wrestlers.
IMO Chael and Munoz will cancel out each other's wrestling and it will come down to who is better on the feet. Kind of like Lesnar vs Velasquez or so many more wrestler vs wrestler matchups. That is a toss-up, Munoz has the power but Chael has some fairly sharp boxing.
Personally I pick Munoz in this matchup, I like his momentum, his attitude and his power more here. He doesn't yet have the hype Chael does, but his star is rising.