I think Nunn is the more talented fighter but Froch simply found a way too win. I think Froch grinds him down and stops him late.
Froch looked pretty bad vs Dirrell who was a slick Southpaw Froch couldn't land anything of note and looked pretty pedestrian TBH. Nunn could school Froch my only issue is that Nunn is too hot and cold above Middleweight for me to pick him with any confidence.