Switch dempsey over to Joe frazier timeline, how does he do. A swarmer fighter alike in ways to frazier how would he do against Ellis, Oscar, buster, a returning ali, quarry and of course big George. This would be a bigger size version of Jack, not the cruiserweight type. More in line with the weight s of the heavy weight s in the 70s. Would jack make it all the way to foreman or does he lose before then?
Can picture him beating those guys myself. Against Ali I think it could play out similar to the actual frazier fight with Jack winning a slight unanimous. When we get to foreman unless dempsey drastically changes his style I think it's going to be a crushing early round s loss for him. It's that old style s make fights stuff. Now if Jack was to play it differently., perhaps use in the jab, slipping, feigning and giving foreman plenty of angles and movement whilst playing to his own strengths he could possibly beat George . Take him in to late round s where foreman is less effective