Boxing Battles Part 2?

Tyson, Louis, Ezzard Charles are certain. I lean toward Holmes(size and incredible jab), Walcott, Lewis(on size only) Robinson but this is truly impossible to say. They fought in different eras, different weight gloves, different styles...all else equal, the older fighter knew the game better, had more heart, but lacked the power and size. Power however often fades as fights progress and Baer and Dempsey and the Rock annihilated many big guys, as did Joe Louis (i.e. Buddy Baer, Maxie's brother)...so I'm just guessing.