You are absolutely right. 12 year olds would know the difference between to and too.
Seriously though, what modern games are hard? Twilight Princess was easy, especially the bosses. There are some challenges in Super Mario Galaxy and you can't deny that. Luigi's Purple Coins for one. That's what great about Galaxy though, most gamers can beat the game, but completing it is a lot more of a challenge. Basically they made this game for everyone. The less accomplished gamers can beat it while the completionist will try to get 120 stars. But yeah, go ahead and bitch about the highest rated game since Ocarina of Time.