But ask people if they've heard of Louis and if they've heard of Ali, more people will have heard of Ali, no? Ask somebody who said "float like a butterfly, sting like a bee" and people will know that is Ali, no? People will use that quote without even necessarily knowing who said it, even.
I'm not sure there's any athlete with as much cultural impact as Ali, and certainly no other boxer.
Robinson may well be a technically superior boxer to Ali, but Ali's probably close enough for it to be in debate and Ali's transcendence of the sport puts him over the top for me.
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