It's an interesting fight based on contrasting styles, and I could see Froch scoring a late KO, but I'd favor Bute to win by a wide points decision.
Other than Taylor, who? Andrade and Bika are both better than Pascal, and Bute has fought about 6 guys better than Froch's third best opponent. Until Froch fought Taylor, he was pretty damn unproven.
How can you say a nearly man like Bika is better than world champ Pascal? Pascal would outbox Andrade who is basically famous for getting completely dominated by Kessler. Bute beat a washed up Joppy which is equivalent to Froch beating a shot Robin Reid. So I stand by what I said Froch has fought better fighters.
Just a matter of skill, Bute is the much better fighter and that is obvious. Carl gets by with his hard head. I do not see Bute going for a knockout knowing this, and he could just toy with him for 12 rounds.