Originally Posted by
Lohe
Wrong, not at all the case, it is a variable of many things, the biggest being the amount of healers you use.
If you raid is good at not taking damage you can get away with less healers, as thus there would be more for each healer to heal.
Also not entirely true. It would be true if 100% of the priests healing were absorbs, but it isn't. Not even PW:S is 100% absorb because of the PW:S glyph which everyone uses.
Furthermore just because there's raid damage it doesn't mean disc automatically becomes the best healer, this is demonstrably false, just take a look at the top priests for heroic cho'gall 25. Among the priest specs, it is dominated by holy, not disc.