Froch is more proven (by far), but I think Bute is the more talented fighter. I think both guys have the power to hurt the other, but I think Bute would land cleaner and more often, and I think he body-attack would really slow Froch down. I could see Froch forcing a late stoppage, if Bute's body work didn't do too much damage, but my money would be on Bute by TKO or wide points decision as I think he would simply out-box Froch.