I wonder how many people here have actually completed T5 and see how superior SCH is for almost every fight in coil.

T1: Tank healing, double SCH preferred

T2: Tank healing, light ambient damage, SCH+WHM preferred, but double of either healer is doable

T4: Heavy tank healing, double SCH preferred

T5: More heavy tank healing, some raid healing required for Aetheric Profusion but nothing whispering dawn + succor can't handle. 6 lustrates per minute trivializes Death Sentence. Double SCH preferred.

SCH just has more tools in addition to their superior tank healing. Apples and oranges, yeah, but WHM is more like a rotten apple and SCH is a fresh ripe orange.