I consider Mir to be a slightly more accomplished Josh Barnett and with a pretty similar skillset. This is certainly Cormier's fight to lose, but if Mir has shown anything in his career it's that he can pull off subs from the bottom.
I'm looking for Cormier to knock Mir down with an overhand right, Mir to eat a lot of shots from half guard and gas his arms and hips out trying for a power sub that Cormier defends, then come out exhausted in the second round, get dropped again and finished.
but I could be wrong. I often am.