My point its: Why would you get a SCH instead of a SGE? SGE has better dps and has better healing. Biggers shields on demand? By design SE would never make the difference in shields obligatory as it would lock sch as the shield healer, same with the party sprint. From a pure potency perspective there is no reason to ever bring a sch over sge. At least with WHM vs AST, there are situations where cure 3 can shine and you say, well WHM could make a difference here (same with living dead)