Well, so far I think its proven..but there are some exceptions.
Today I played on ALL Euro servers Quake Arena, Nexuiz, Open Arena and Unreal Tournament (The first one for you n00bs) and its true.
Even with a ping 2-4 times the ping they have i still can pawn them in "most" games.
My conclusion with this is many of them have old comps with shit vid cards, and play games that the vid cards meet the min specs.
Plus they just stand around alot and seem lost, but these are the same player names I have been playing since the 90's on most games.
I really just don't get it.
I like many of our Euro friends, I think Neo is one of the best at Gore playing chick, some may disagree but for his ping the guy is fuckin great..as is Maniax.
But all in all it seems like Euro's just don't play well. Maybe some just get in a game and don't care about the competitive aspect of a game.

Maybe I just wind up playing bleeding heart pacifists..
Thats prolly it.