First of all, he didn't say exactly a dozen, he said around a dozen. Second, if they are 12 with the 3 raids, that means they'd have to do a 4 bosses raid and a 3 bosses raid. Does that make any sense? Nope. End-game content isn't only raiding either, I guess you should know that. And my last question, if it bothers you so much, why don't you demand them? No one will give a shit about you or your statements here, and that's reality.
PS: So, you have Cataclysm and know how things will turn out? Daaamn, I'd like to buy a copy too, good sir. Cause believing on GC's word only when the game's on Alpha would be pretty retarded, and I guess a smart person like you wouldn't do that. (In case you failed at sarcasm, just wait till Beta, and then QQ. Not like you'll convince anyone to quit)
Edit: Well, I see people support Cata for now Glad to see some optimism. Anyways, if you have trouble understanding my point, read what Shokat said. End game content isn't only raids you know.