Armon Shulz (spelling?) was doing legs with us today. He is about my height (6'3"). And a complete monster.
But he is definitely the exception.
All the other pros have been under 5'10".
Goudy, you are smoking weed if you do not think it is harder to fill out a larger frame. It is simple logic, physics, economics and aesthetics. For example, how much does it cost to feed and supplement a guy who weights 265lbs versus a guy who weights 195lbs (it is more expensive)? Or, if a 5'3" guy has a squat range of motion of 4" and a 6'3" guy has a range of 16", who has a harder time performing the squat (it is more strenuous)? Or, if a 5'3" guy has a .25" gap between his bicep and forearm and the 6'3" guy has a proportionate gap of 1.25", whose arms looks bigger (it is less aesthetic)?
However, I will say that once the taller guy does fill out proportionately, he will blow away nearly any shorter guy.