Both are VERY good. Wladimir has a slightly more effective and powerful jab. His left hook is better, and his right hand is as good as Lennox. Lennox has a better uppercut and deals on the inside better. Both are very physically strong... toss up there. As far as who is better all around... it's close. I think Wladimir has more natural talent.
Wlad has no infighting skills, zero, nada Lewis is probably the greatest inside fighter in HW history, along with Bowe.
Wlad is the bigger and stronger of the two, better right hand and footspeed, but H2H I think Lennox beats him, Wlad wouldn't be able to wrestle with Lennox, he could also fight dirty when a big man tried to overpower him (see the Grant fight)
Resume: Lennox by a good, long ways. Not exactly comparable at all. Skills: Pretty darn close, in my opinion. Slight edge to Lennox. H2H: I don't see it as being quite as obviously Lennox's to lose as most do. Pretty dead even to me. A young Wladimir gets blasted out, but an older Wladimir has a good chance of doing the blasting. "Physical Prime Wladimir" had a lousy chin. "Performance Prime Wladimir" has a great chin. "Physical Prime Lennox" had a questionable and to some extent lousy chin. "Performance Prime Lennox" is the same version as his physical prime. Therefore, depending on at what point in their careers they fought each other, I might actually make a wager to go with Wladimir stopping him depending on the odds.
All things considered, Lewis, clearly, but nobody in in the last couple of decades besides Wladimir Klitschko is even close to Lewis.
How the f** could anyone ask that question? Wlad has been fed a string of tomato cans / stylistically perfect matchups. He didn't avenge his losses because he couldn't. Lennox, although complacent at times would have ktfo Wlad, who is not even the best boxer in his family.