AST's weakness in end game

[AlphaSonic]

I'm not talking about passive, natural MP regen. I'm talking about MP regen abilities. The only difference between the other two healers and AST is the speed at which Aetherflow and Assize provide MP. They are instant where Ewer/LA is over time.

Shroud/Luminiferous/Ewer/Drain scale with level not with Piety. It doesn't matter if you have 200000000 MP or 1000 MP, all those abilities will restore the same amount of MP no matter how much MP you have.