AST's weakness in end game

[Risvertasashi]

I got idea since all those claiming AST is fine go run double as in savage 1 in noct sect the other in diurnal sect ... Now since we are mimics of whm/ sch we should be able to do it no problem at all

Well, this is wrong because noct stance does not mimic SCH. It mimics a WHM with shields rather than HoTs. SCH is much, much more than just shields.

All that said AST can replace WHM pretty handily. And yes, WHM + noct AST in A3S works (though I prefer SCH). Not sure on A4S but I bet someone's done it.