How would they even make another healer job though?

[Jandor]

While this seems to be a good generalization, it's a bit inaccurate. SCH doesn't have a Large heal, nor does it have an AoE heal, but it does have the faerie to compensate for the lack of those skills.

SCH has a large heal and an AoE heal, they're rather different in that half of the potency is wrapped up in shields, but they still fit in the "big heal" and "aoe heal" categories IMHO.

Cure II is 700 potency, Adloquium is 300 potency plus 375 potency as a shield, for 675 potency total. Both cost 1000MP.

Medica is 300 potency, Succor is 180 potency plus a 225 potency shield, for 405 potency total. Medica is 1000MP and Succor is 1300MP.