Not as much as you think. I rate Holyfield higher on a p4p basis but think Lewis achieved more at heavyweight. I also think Lewis was clearly robbed in their first fight and he won the second fight. I also think Lewis is a H2H nightmare for most fighters. Top 5 H2H. I suspect my views are in line with the majority on this forum.
if holyfield fought in spurts at age 37 in the rematch you can imagine what he would do from age 28 to age 34 to lennox lewis