What???
First of all
Beckham himself admitted he hated playing right wing, he alway saw himself as a centre midfielder.
Next
A world class player doesn't mean beating fullbacks for 90 minutes, it means he is good at what he does freekicks, passing the ball 50 odd yards. A world class player is also someone that can change a game, remember that freekick against Greece?
Finally.
I was a fullback (right and left) when I played at school and for local teams and there were a few times I was quicker then the winger. A quick turn, slick foot work or even a first time cross was enough. So that proves what you are saying about needing pace to be a winger are false.
I think a poll is needed.