I know Mousasi since a long time, I watched him during one of his training session. This guy has the all package, awesome Kick boxing tools ( he beat Musashi in the recent K1 rules) he has solid background in BJJ and Wrestling. at the beginning it was really his flaw, but he trained so much in BJJ that he became a good at submission when he wants.

Good chin and good stamina. I think that he shouldn't go beyond 205. there are a tons of fighters he can beat (Machida included). Sounjoukou is a joke...

btw he will perform a demonstration with Fedor at the next M1 challenge. having seen the sparring of Fedor and Aoki some months ago, I'm sure it's going to be interesting :-)