The numbers seem quite large for Marth, putting his representation up there. Yet, how many Wario players do you know? And he's up there in A Rank. Yeah, if for some odd reason everyone played Snake (lol New England), then there'd be little room for representation among any other characters, but that rarely is the case. Or are you saying there's a lot of Snakes, making Snake more likely to win? Because that's terrible logic. And, if you're saying Snake is only up there because of popularity and there are characters that can be really good that nobody is using... are you taking everyone else for morons? Tell me, would you pick Bowser or Kirby in Melee because you think they're really amazing characters in competitive play? People naturally gravitate toward what appears to be the strongest character to them, which happens to be one of the 10 or so in the S, A, and B ranks typically. If you're claiming some character isn't able to let his potential shine, well, that's the fault of all the people who use that character and don't represent in tournaments, isn't it?
That remains to be proven. Using hypothetical situations to argue against objective gathering of data is kind of moronic.