Wharton had the better chin in my opinion. As for a fight between the two, I'd have to go with Froch by decision.
That's why is say Wharton beats hm. Better chin, better boxing skills, equal power. He would have forced Carl into a brawl. The guy was a beast.
I was a big Wharton fan back during his heydey. He hit harder than Froch (with that thumping left hook of his) and his chin forged out of iron.
Imagine that thumping left crashing into Froch's big hooter like that. Even Nigel Benn couldn't do that to Galvano in two attempts (WUD12, WTKO 4 on a cut). Froch's hooter would look like a pancake afterwards. 26:07 [YT]ufQn9ZMU42U[/YT]