Yeah, that's the part I don't believe. Uruguayan players may be a lot of things but racists isn't one. Not to mention there was no actual evidence of what was said, simply Evra's word against Suarez' and the FA's interpretation of what might have gone down.
Suarez is clearly not like everyone else, he's mental. You can't compare him to other players, you wouldn't expect Cavani or Forlan to get up to any of the mentalness he gets up to. I'd never expect anyone else from Uruguay or anywhere to get up to anything Suarez gets up to. You're right, I don't know of any other Uruguayan players who have been banned for racially abusing someone, but I also don't know of any other Uruguayans who have repeatedly gnawed on opponents. So clearly Suarez is a very special case.
There was evidence when Suarez admitted what he said, said it's not racist in Uruguay and then denied he said it at all. Suarez undid his entire defense by admitting what he said, if I remember right. I do think the ban was over the top when it was essentially for saying nasty things, considering players got less bans for attempting to break other players legs. But he admitted what he said and in England that's considered racist abuse, he did it at a time when they were trying to crack down on racist abuse and in a massively high profile match. Him and Liverpool's behaviour after that just made things increasingly worse for the whole situation.
Quite simply, he's an absolute moron at best.