Originally Posted by
Exerci
Anything over 1300 hps is overhealing? Now, let's imagine an easy case, like solohealing the tank on steelbreaker in an IC normal attempt. In the assumption that steelbreaker misses with half his normal punches, and assuming he hits once per 2 seconds, which is fairly standard, he'll land a normal hit every 4 seconds on average. Each of those hits will do around 20k damage, so that's 20k per 4 seconds, hence 5k dps to the tank. To keep the tank from dying a miserable death, you will then need 5000 hps to keep him from dying in the average situation.
Now, anyone who has ever raided knows that you can't rely on the boss missing on half his hits. Imagine a 40k health tank, a healer doing exactly 5k hps, and steelbreaker punching the tank in the face. If the average situation occurs, the tank lives and everyone is happy. In a worst case scenario, steelbreaker hits tank for 20k, tank is healed to 30k before next punch which sends him to 10k, and is now healed to 20k before steelbreaker on the third punch punches the tank's face in.
The reason why so many paladin healers are big proponents of the holy light method, is that the holy light method works both when you get a bad string of avoidance and on the average fight. The flash-spam works in most situations, but worst case scenarios that usually require the utmost healing capacity a healer can do, will, if they tax a holy light spammers healing capacity to the fullest, be literally impossible to heal through with flash spam, even with holy shock + flash spam.