Assume fight in 1958 era. Could Dulle "blitzkrieg" an unsuspecting Patterson kinda like Ingo did later in June 1959.
In looking at Floyd's career a couple of decades ago, I saw that he beat him twice, once by stoppage. No Durelle could never have beaten Floyd.
With Floyd's two wins over Yvonne while still early in his career there is no reason to think a third go would have been any different. Floyd stopped him in their second bout and likely would have repeated it had they met again.
Durelle should have never gotten a shot at the LHW title and should never have given an ATG that much trouble. He was a very pedestrian fighter.