AST's weakness in end game

[Kabzy]

I don't think whm has a better mp management than AST...

Can't agree with this at all. With the addition of Assize, MP is so much easier to manage on WHMs now. The only real way to get OOM is if you're not using Shroud/Assize when it's available or if you're overhealing like crazy. I thought MP management was a huge factor in learning WHM back in 2.x, and that's now relatable to AST only. Ewer is a very weak MP regen, and usually not even worth using unless you're in a very dire situation.