This recurring theme that Ellis, Machen, Folley and any decent boxer would beat Foreman is flawed. Ali never 'outboxed' Foreman. He out-gutted and outsmarted him using tactics that would have spelled immediate doom for just about any other heavyweight.
If a peak Foreman was so easy to beat for any skilled boxer, Ali wouldn't have had to piss blood and take some of the most helacious body shots of his career to get that win.
Machen folded like a deck of cards againt Johansson, ditto for Ellis against Shavers but it's a given that these guys both defeat Foreman?