You know what I would have liked to see is Cormier vs Fedor vs Brock. I've NEVER seen someone outgrapple Barnett like that.
Which is why he will smash Mir should they fight.
In my opinion, Barnett submission game is right up there with Mir although Barnett uses submission wrestling while Mir uses BJJ. But if Barnett couldn't get Cormier down and submit him, I dont see how Mir could (which is the only way Mir can win).