Well I guess that either you are a revolutionary maverick who has spoted something that every other knowledgable person has overlooked or you are wrong. I lean towards the latter.
If Cobb is of a similar calibre to the inferior heavyweights of the 30s then why didnt he just get knocked out in the first round by all the top fighters of the 80s like Louis and his contemporaries would. You seem to be acknowledging that a fighter from the 30s with a good chin would almost certainly not get knocked out in the first round.
Good points. We do have to consider however, that Vitali did take some monsterous shots from men like Corrie Sanders, Ross Purity, and Herbie Hide. None were great fighters of course, but all had big punches. He also took som big shots from an aging Lewis until he was stopped on cuts, but that should'nt reflect badly on his chin. How good of a fighter was Cesar Brion? I never watched any footage of him myself.
Vitali's chin was unbelievable, in my opinion. The Lennox fight is all you really need to watch to see that.
I feel he has a better chin than most of those guys. But I still favoured Louis, as Cobb was up his ally.
He took some sick shots there but I am always reluctant to draw conclusions based on a single fight. Guys with fair but not great chins ocasionaly take shots that would shake the walls of a city. Take Lennox Lewis for example.
He took similar shots against Sanders. I've never seen Lewis hit with a shot like the uppercut he hit Vitali with.