I know that Lyle, but out of the guys he has fought with a decent punch, none had as little a height difference that the guys you listed.

You can punch up to a certain extent but you can't use them as examples... Ruiz has what? 2-3 inches on Tyson.

Tyson beat Holmes who had 3-4 inches on him... not 10 inches. None of those guys had more than 5 inches... most of valuev's opponents are giving up at least 6-7 inches, often more Barret gave up 9.

Valvuev hasn't fought one fighter who could punch that was tall enough to not loose all of their power punching up at him.