As far as I know accuracy is useless in PvP because nobody has resistance except tanks, and that might be not worth it.
There are 2 viable enhancements from a DPS PvP perspective:
Power / Surge
Crit / Surge
As you can see, both have surge, so it's not like I sit here and say "Oh, Surge got nerfed, I'm gonna balance out my gear now and try something else!", because there is really no alternative.