Carl. It's difficult to judge G-man because at 168 he only had that Benn fight. In the documentary Benn said 'I thought, he doesn't look big, he's just a tall guy'. This is the attitude Froch would take and his chin is better than Benn's. G-man is too small and gets out gunned by Carl, who has improved massively since the super6 began.
With his lack of defence and reflexes, lack of a big punch and all-action style, Froch would get smashed to bits. Frochy is my favourite active fighter, but G-Man is all wrong for him.
This was done recently, low guard, slowish hands and slowish reactions are going to see any SMW getting their head taken off by GMAN
Froch is very smart, he knows he has to get though the first three rounds. If he does that relatively unharmed, he has a good chance. If he gets to the sixth, even if Froch is behind on the cards, providing he is not badly hurt, McClellan's record suggest Froch will win, probably on a late stoppage.
froch is trash....he lost to kessler, got THE BIGGEST GIFT EVER against Direll(I am unable to see anyway he won that fight, i didn't even think it was close) and is going to be dominated by ward. G-Man wouldn't just win, he'd smash him to pieces.