Good luck with tanking ulduar as a warrior. Our druids & dks regularly outtank warriors by a large degree. We just simply dont use warriors except for minor jobs atm - certainly not on bosses. Now the tankspot videos on this site feature warriors tanking everything - including even hardmodes! - so I know it can be done. To me, however, it just seems a hell of a lot more difficult, putting a much bigger strains on your raid. Hopefully they fix it before warrriors disappear from the tanking scene.
I'm sort of glad its like this - it forces guilds to try out other tanks, and that's a good thing. But warriors are so squishy right now, its humiliating, and its been a long time.