While we do have emergency tactics and indom, keep in mind that these come with cooldowns that feel like forever when you're in a situations where very heavy aoe damage is being dealt and you're the only healer alive. In Sephirot Ex for example, during the add phase with colors and tank towers in short order, if your co healer is down and out, spamming succor might not be enough and if you've blown through indom and tactics already, welp!

So I can't agree that we are on par with other healers in the aoe department. Far from it, in fact. But for most content, what we have is plenty. And for the rest, you'll have backup. Hopefully. :3