The main sage healing abilites are Healing Trance, Wandering Mend, Force Armor, Salvation, which are all on a cd except for Force Armor which applies a debuff. If a sage healer is using Benevolance/Deliverance a lot then they are not playing the spec as intended, you would only use resurgence > deliverance > benevolance if you have the auto-crit proc from the set bonus and the insta-cast for benevolence plus one or two stacks of resplendence to make up for the hit to your resources.