Froch wins easily. I think he could box with Martinez all night but ultimately would just have too much power.
Good fight. A chance for Martinez to make himself an ATG being the man at 154, 160 and 168 simultaneously. Probably step too far for him though. I think Froch will be too strong for him.
I could see Martinez surviving, while making it somewhat competitive. Even if Froch is swatting flies 90% of the time, his aggression and pace control would see him walk away with a lopsided UD. Froch UD.