I can elaborate the reason why I think my AST will be more helpful in the AoE healing (that's what I said in the other thread) and in managing preys than my SCH.
AoE healing is a WHM field. They get the most powerful spells and they have lots of them (Cure III, Medica, Medica II, Assize and Asylum). SCH lacks spells in that department: they have Succor, which has 150 potency and shields, and Indomitability, being off-GCD and consuming 1 stack of Aetherflow. They can also turn Succor into a Medica if they use their Emergency Tactics cooldown, which is 30s. The struggle is as follows: if I use ET to turn Succor into a 300 potency AoE healing spell, I lose that cooldown to turn Adloquium into a big healing spell (600 potency, unless it crits) and if I use Indomitability, I lose one stack and can only do 2 more Lustrates until I get more stacks of Aetherflow. This is one of the SCH's weaknesses: since they can do much shielding and DPSing, they lack healing tools. [I'll continue]