Zale would have torn Duran's body up in winning a gruelling 15 round decision. Duran may have been a better p4p fighter than Zale but the Man od Steel was a much better middleweight....especially before he went into the service in WW2.
You know as much about Boxing as you do about being Human. Durans prime was as a Lwt. although he did fight at Middle with some degree of success. Zale of course was a natural Middle and would destroy a bloated, past prime Duran.
I'm guessing those who are picking Duran are the same ones who say he lost to Leonard, Benitez, Hagler and Hearns because the fights were not at his "natural weight".