It's just not. By the time I have someone targeted, if there is more than 1 person on him/her he dies. I can spam heals, he will still die. I don't want to compare this game to others. It's not necessary to do so. I know however that ppl will say WOW MODEL BLA BLA BLA. Forget it, that's not the point of this thread. The point is pvp healing is almost meaningless. It works out to be a crap version of triage healing because dps classes just do SO much dps.
The amount of CC and DPS that classes do does not balance out the amount of healing throughput a healer can provide.
Healing needs a big time buff in pvp or else everyone might as well just be a dps.