you're kind of making my point though, Valuev was poor but actually became a world champion on account of his size. Granted, Klitschko is very good, excellent even but the height is a major factor in a lot of his bouts.
Yeah but when you got height, the other guy has to punch upwards. I'd rather be the taller guy in any fight
Smaller guys have more leverage coming up than a taller one does going down. They also have easier access to the body and the legs in mma and wrestling. There's a Frazier for every Holmes a Tyson for every klitchko a marciano for every Lewis. Nothing in the history books proves that taller fighters have any advantage, at all. There are advantages to both. However, put a guy at 160 against a guy at 225 and good luck thinking the former has a chance because of his height.