from what i saw in the last beta (the only time i've had my hands on the game so far), i feel a pvp-focused cleric should be primarily healing. aoe isn't going to play a big enough part in pvp for the only class with heals to pass up healing. just my 2 cents, albeit an uninformed, inexperienced 2 cents.
torn between the extra points from human and the 5% extra damage >50% plus the power debuff from tiefling. i think tieflings look pertty stupid, though :/