Sonny Liston vs Jack Dempsey?

Liston was bigger, hit harder and had one of the best and strongest jabs in history. Dempsey, on the other hand, had incredible stamina. He was a swarmer who just kept on punching and coming at you for 15 rounds. Now Liston had this reputation for vices and laxity in training so he usually lost steam after 5 or 6 rounds. I predict a Liston KO inside 5 rounds. If he'd fail to do so, Dempsey would rally and score a late TKO (11th or 12th) or a UD.