well my 5 holy pallies are still killable. they can still be feared easily, kited and aoe'd. Stuns and things will still catch you in a BG, but the nice thing is that it still takes 5 good players to take you down, or more. i have decent gear (still some ret pvp gear and a few deadly items) but mostly holy stuff and I can be killed. It's tough, but sometimes you have no mana and they can easily take you down at that point.