no weapon mastery so you'd have you to a weapon chain on your weapon, which is going to knock your dmg down.
no second wind? no blood craze? these are the talents that give arms their survivability. granted its not as good as having a healer, but they help if your healer gets cc'd and your on your own for 10 seconds.
no piercing howl? its awesome to slow down an entire arena team with a global, and against rogues/ferals that always seem to dodge hamstrings you can still get them.
only 2/3 attt? thats basically free attack power that you are saying no to.
57/14/0 (The World of Warcraft Armory) is the all-around most used arms spec to pvp with.