Haye wouldn't have stepped up to heavyweight if Lewis was still around. Even he knows Lewis would spark him out very quickly.
a prime lewis would be ...what about 25-28 years of age, maybe 30? everyone haye has fought have been past their prime at heavyweight and close to 40...or did you miss any of that?
Haye hasnt even shown he can beat a past their prime Klitshcko much less a prime Lennox Lewis. Lewis by a wide UD vs a Haye on survival mode.
Haye has to plant his feet to throw his 2/3 punch combinations at some point. I can only imagine with his horrible stamina, Lewis would find him and stop him, even if he did run.