Lets not forget the likes of Slade Miteff Neuhaus Sys Gardner Williams Bethea Carter Were ranked in the 50's.
He would beat all of them right up until running into Louis or Marciano. There was only one belt so Green would end up with just as many titles as he had now.
He doesn't beat Walcott or Marciano if that's what you're asking. He may or may not get past old Joe Louis.
Patterson would beat him bad. He did not have a stellar career, but Mitch did have some talent, very nice evasive moves and counters against Tyson there. And his interviews were priceless!
And in the 1970s you had guys like Chuck Wepner, Ron Stander, Terry Daniels , Alfredo Evangelista, Ossie Ocasio, Jose Roman and Jean Pierre Coopman getting title shots.. we could make similar arguments about every decade.. it doesn’t necessarily mean that we can pluck a mediocrity out of one era and turn him into a God in another.
I think he out-athletes most of the scrubs who qualified as contenders in that day. He's just too much man, too much athleticism combined with a fighting heart. Sure, he loses to the occasional widebody and stumpy arm but overall he lands like an Alien from the Third Ring of Uranus and befuddles the majority of them. It just kinda puts the differing eras in perspective, doesn't it?