for raids and such they will take an equally geared fury warrior over an arms, the only reason you should raid as arms imo is if you are into hard core arena and just wanna check out kara for fun, but arms is a pure pvp specc mosts classes have one thats great for pvp but not so great for pve.
Wrong, in any 25-men the first DPS warrior is a 33/28warrior for the BF debuf, his personal DPS wil be lower yes but the raid DPS wil be a lot bigger, not only wil al melee DPS do 4% more DPS, also the tank wil do more DPS wich results in higher magic DPS cause the treatcap wil be higher. Fury is a 10-men spec, for people who dont min/max or if there 2 DPS warriors in the raid.