The best of both men? The Coetzee of the Spinks & Dokes fights vs the Rahman of the Lewis fight? Coetzee's two victories were legit...Rahman's was a fluke...as proven by a Lewis in their rematch. Coetzee ko's Rahman in 6, courtesy of his bionic right hands...one which decks Rahman in the 6th prior to the ko a few moments later.
Lewis would lay out Coetzee and Rahman beat Sanders before Lewis, who was thoroughly better than Spinks. Not sure where you're going with that logic.
I won’t choose a winner but I’m fairly confident that this would be an exciting fight either way. Two tough brawlers who likes to mix it up. If they ended up having multiple meetings I wouldn’t be surprised to see mixed results either way.