Noct Ast Misconception?

[Alistaire]

What if we have had it wrong all along maybe noct ast wasnt meant to replace sch as the off healer but instead allow whm to be the off healer instead in whm/ast parties

It's not that noct ast is supposed to replace sch as a goal, but when you're looking at "the offhealer" as a role 2 classes compete for, sch wins the role, easily. AST could be completely different from and still be on par with SCH...but it isn't.