Honestly, Mousasi is the most under-rated fighter in the world.
I mean the guy is freaking 32-3 with a decent amount of names on his resume. He can catch you in nasty submissions off his back and KO you standing. Sure he doesn't have the best wrestling but he really doesn't need to, thats not his game.
King Mo is a good fighter we all know that, but lets be honest here...he didn't want anything to do with Mousasi period. Thats why the whole fight looked like a NCAA wrestling match and not a fight.
I see big things in his future. I remember him saying he wanted to go to HW years ago but I can't see that anymore...hes walking around barely over 210.
His best chances would be in MW vs anyone...and I would even say he would give Anderson Silva the best fight ever at MW. I think he can also be quite successful at LHW too but I could see him having some problems because of his weight.