Overeem's wrestling doesn't remotely match that of Brock and Cain. Brock also matches Alistair in size, so there's every chance he could take Alistair down and pound on him. Sure, Brock would get absolutely destroyed on the feet, but I think Brock's wrestling makes it a much more intriguing match-up than any fight in SF outside Fedor. Seriously, who outside Fedor is going to come close to beating Ubereem? Werdum gets KTFO, Big Foot is over-rated and Barnett wouldn't get licensed. I'd say Roy Nelson is a tougher fight for Ubereem than Werdum or Big Foot. They should probably let Overeem take Werdum out, so he can avenge the loss from that tough period of his career, but Werdum would get destroyed. I give Frank Mir more of a chance than Werdum, at least Mir's stand-up would allow him to not get destroyed on the feet. Carwin also poses Alistair a serious threat. Alistair likes the clinch, but you do not want to get sloppy with Carwin in the clinch. Did you see what he did to Mir in the clinch? Much more intriguing match-ups in the UFC, Strikeforce's HW division is so over-rated.