Seriously though..
MM's a pretty underrated character.. Physical stats comparable to Superman, and a boatload of useful powers like phase shifting, invisibility, shapeshifting weapons for bludgeoning and piercing damage (He pierced Etrigan the Demon's chest, although it didn't hurt him because of a Stonehenge amp.), shapeshifting limbs, armoring himself up, ability to tank Superman + hits like Plastic Man could, TK and TP.. He's one of DC's most powerful, versatile characters. In terms of sheer power, Thor may be more powerful, but MM certainly has the stuff to beat Thor before he can pull out the big guns. And, he does have a speed advantage over Thor.
IMO, he takes the majority.