nerfed, wouldn't bother.
wouldn bother with tanks if its not wpvp anyway.
If its wpvp i'd go indeed protection warrior, because the legendaries are insane on them granting them great selfheal and mobility.(dks only have selfheal) and vengeance dh.
Mobility along with mitigation is king.
anything else i'd take an affliction lock, shadow is just not as tough and needs more casts, affliction lock does same or better dmg and is a fortress. Its too easy to focus on them if you ever dare to play alone.
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lol? alpha/beta is long over and things changed. Assassination is completely a pve spec, now. And future 7.2.5. sub changes that will provide more burst, will be the final nail in the coffin!
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max dps in pvp, a good one