The other point that Ariel pointed out Monday (this was a listener question on MMA Hour, as well) was that there is no amateur MMA circuit to pull from. And once you go pro, you're locked up by the UFC if you're truly world class. It'd be, at best, like watching basketball: "O, yeah the Gasols make Spain passable & there's goofy lookin' Dirk rocking it for Germany, but USA just crushes of course."
I really like the idea of BJJ becoming an Olympic sport. That would be friggin' phenomenal!!