I just bought this game 2 weeks ago and have a level 25 combat medic trooper and i have to say that the healing in this game absolutely blows. Hammershots for heaing? The healing is negligeable and is a waste of time in pvp because the amount healed is a joke. You don't even have time to deal damage and keep someone alive at the same time keeping your power up. That and the fact that there isn't any kind of lifesteal in this game that i can see from playing jedi, smuggler or trooper, which would make it easier to keep people healed. At least in Warhammer: AoR the Warrior Priest could fight and heal at the same time so that they didn't drag the rest of the team down.
So far i am unimpressed with the healing in this game, it's just meh and when the healing gets nerfed again i think i will just respec all damage. Never really liked healing but this game made me like it even less.
Each to his own - I've played every healing class in WoW at max level at some point, and funnily enough I find the healing in this game to be much more engaging.
Honestly, the "okay, you have a huge mana pool that slowly runs out over 10 minutes" thing is not engaging resource management. The whole energy/heat/ammo thing is a totally new style of healing that (as far as I know) hasn't been used in any other MMO, yet BioWare managed to do it successfully. It's quite engaging and makes you think about tradeoffs in energy expenditure rather than clicking health bars and spamming Rejuvenation or Prayer of Healing endlessly.
However, I never participated in instanced PvP in both games so I'm speaking only from a PvE perspective.