Except if you play a classic mode, nothing that anyone paid for is available.
Besides, what you're telling me is that because some people will be able to get a character a little faster, those people will be able to win? Dude, if getting the snow pea with upgrades without having to play 20 matches makes you SUDDENLY WIN, then man, you have some far bigger problems to figure out.
The classes don't dictate how good someone is, and if you don't like other players having upgrades and variants, play classic. Or hell, go back to Welcome Mat, because it seems to fit your maturity level.