1st loss: Alistair clearly underestimated Bigfoot..... and Alistair was unable to hurt Bigfoot at all. Bigfoot is a TOUGH dude. Bigfoot was not afraid to throw down with Alistair (or Mark Hunt) and won due to his mega-chin, punch combo's and conditioning. Between rounds, Bigfoot was calm as hell. His corner does a GREAT job keeping him calm.
2nd loss: Jeramy Browne's legs are so damn long.... The guy is like 6'7". Alistair thought that he was out of range (wrong!). Alistair was standing a few inches to close to Browne. I feel Alistair is better than Browne, and would probably win in a rematch.