I think Cain has better Cardio, thus taking it late in the fight, with a few rounds being impressive from both.
I havnt seen Cormier's chin tested, so right now its hard to say if he'd even have an early advantage in the fight given his striking fluidity and combination punching/power.
Cain has good kicks and could use them effectively to Cormier's body/leg.
Ill take Cain.
"But if I hit'cha, I thank I might have to split uhhhh...piece of my chain, now I aint wit dat, Ima change the game and put u right on ya back."