So, Lewis surviving Weaver, Mason, Ruddock, Morrison, Tua, Tyson, Grant, Golota, Briggs, Bruno, Tucker and Vitali without tasting the canvas was just a fluke and proved nothing. OK, great point.
And among this swathe of mighty punchers how many landed clean enough on Lewis to register the full extent of their power? Lewis neutralised their power without tasting it. Frazier hit Ali on the choppers every round for 15 rounds. He's not missing Lewis. Sorry.
While Weaver, Ruddock, Morrison, Golota landed literally nothing, and Tyson and Tua - close to nothing, others hit him pretty hard. Lewis' chin is OK. You also forgot to mention Mercer and Holyfield, both hit at least as hard as Tucker, both hit Lewis more than once with nice shots.
Good Lord, people. Part of facing and defeating a heavy puncher is not sticking your chin out there all night... or as Lewis often preferred with the larger power punchers, blasting them out early. In addition to having a good set of whiskers, he also gets credit for nullifying the attack of heavy hitters.