
Originally Posted by
Ultimatecalibur
Neither needs to be. Part of Tenacity's problem is that a 5% mitigation increase does not covert to 5% less healing actions needed and Piety suffers from high cost healing and damage spells not being a significant enough MP drain that increased MP regen does not increase damage by transitioning to higher cost heals.
In theory, a high tenacity build would increase party dps by allowing healers to cast more offensive spells so the party gear composition question would become how much Tenacity do we need to maximize healer dps. The problem with this is that the Healer offensive/healing casts per minute ratio is heavily skewed towards the offensive side.
With Piety, the theory is that with more Piety you would go from casting "Cure 1, Cure 1, Cure 1, Glare, Cure 1, Cure 1, Cure 1, Glare" when you have ~400 MP regen per tick to "Cure 2, Cure 2, Glare, Glare, Cure 2, Cure 2, Glare, Glare" when you have ~700 MP regen per tick. Due to how healing requirements are tuned and how little the MP drain is in fights we pretty much start at the later and Piety becomes more a question of how many Rezs do I need before I go OoM.