I'm pretty sure PvP in DFO gives you HP buff.
Not to mention when you state you "own" someone, it simply means their build is proven to be superior to theirs, or their experience is greater than another, just in a slightly more rude manner.
Also, I think CuteY-BoyZ Wiki Tier list put Elementalist as one of the higher tiers. If your signature's any correct, Mages are gimp until 30+ in PvP. Exorcists simply get better skills earlier.