AST has the strongest heals considering the sect bonuses (only loses to Medica II afaik), strongest utility and ridiculously OP shields. They only lose out in personal DPS slightly, and they more than make up for it in every other way.

WHM seems to be at a decent level, SCH requires more reworking of their abilities than flat out buffs imo. But to say AST doesn't need to be nerfed is just stupid. If they were to buff the other healers to that level, there would be no challenge in playing a healer and even more people would choose to abandon the role out of pure boredom. Nerfs may not be nice, and SE have proven countless times that they can't seem to ever get it right, but leaving AST where it's at right now would be even worse. As a SCH main, there's definitely some salt here, but it's flat out annoying that one job can do everything much better than you. And they can even change sects and play a better version of the other healer too!