iv played all the healing class types in my 9 month beta phase i was in. I lvl a sorc to 50 twice and i can say sorcs are a healer that walks a fine line between very strong and easy to kill. if you use all your ability's and play like your a squishy you will do a lot better. you have interrupts, knock back, slows, stuns, long duration cc (WW).
sprint, and a shield. this class has all the tools to be the most ninja like healer.
you just need to play your healer like a dps that don't want to get hit and (the class can do it) once you get good at stopping your attacker the fact you have heals will feel OP imo.
i would do a few games like this even if it means your not healing others as much as you want its worth it if you can master this style. Healing others will be so easy after you master cc/kiting well.
if you learn the game once you began to understand how the other classes work. you will start do do a lot better, the Sorc to me ls like a Priest/mage.
And they really are.
P.S. Innervate is really strong at 30 and at 37 you really get a lot of force management control