Its really not that big of a deal, just the WOW factor you can do when 4X Lava Burst owns someone. Really if you thought PVE you were going to pull your hair out in PVP you definately will.

I don't have the best setup with totems etc, but I do pretty good with my undergeared Shammies in BG's. Granted my team gets owned cause they are retards but never the less.

Also if you run a shammy team in BG's don't expect to be top damage in most matches. I end up having alot of the HK's but for actually damage not so much, because of the burst of damage you can provide with 4X Shaman.

If you run with a healer then expect to wreck shit just like anyone else running with a healer. I highly suggest running with a Holy/Disc Priest for the damn pesky ret/holy pallies. Its really the only class the can wreck me by itself or combined with a few others.