Obviously a clickbait thread, but I have nothing to do with my life, so here goes...
Rocky fought in an era with few quality opponents and him being a heavyweight had no option of moving between weight classes.
Floyd was obviously more technical, but Marciano was always trying to murder you with power and relentless assault.
Floyd's resume looks more versatile.
If they were both at the same weight it would be Floyd vs Maidana on steroids.
So, resume-wise it's Floyd for me.
As for an actual fight between them, I think Floyd would tame that power, but you never know.
Is Mike Tyson at 53 capable of doing something sensational at cruiser?
Well, he once said he could sell out Madison Square Garden masturbating. So, maybe that. Not sure about cruiserweight tho.
In boxing, you have three things:
1. Your health;
2. The money;
3. The people you beat.
Have any two of these by the end of career and you are a great fighter. All three is a bliss / exceptional fighter.
All the matchmaking revolves around maximizing one or two of these three things.
There are excuses and there are excuses. I mean, wrong game plan, lack of preparation, underestimating your opponent are OK in my book. Heavy costume, however... Hmm...
Ali was the greatest not only because of his victories, but also because he took part in social causes.
So, if Usyk wins a title at heavyweight and stops the war in Ukraine, he might become one of the greatest.