Two ways i can see a lesnar win...#1, he catches Cain with a big punch, and follows him down with big GnP. #2, he takes him down and controls him...this scenario I highly doubt, as I suspect that Cain is a good enough wrestler to at least get back up if taken down. i think there is a very decent chance that Cain just lights Brock up on the feet...technically, he is much better than Brock or Carwin. he may not knock Brock around like Shane did, but he will land at will IMO.