I read it as three round fights too. 12 rounders is different. Tyson would still start favourite but Lewis would win the whole thing.

I can't properly judge the fossils. I wasn't alive when they were in their pomp, most of what i've seen is just the good/memorable bits, so have no real understanding of the overall strength of the particular era.

Ali would have looked like a proper powderpuff puncher vs Vitali. That leads me to think Vitali would beat him.