Melee clerics just plain suck in PVP. Hate to burst your bubble. Any of the 3 healing souls will be where you are most effective to your team. If you are dead set on DPS, then Cabalist works well against multiple enemies. Most effective in Black Garden and Escalation Whitefall. Personally, I like Inquisitor/Justicar. Burst isn't very high, but most of your spells will be life based so you will heal yourself and build convictions. I never have a problem being within the top 3 on damage and killing blows, but then again I am a much higher rank.