aaaaaw, why so serious, notice the winking smiley at the end of the sentence please :)
And i was asking about holy. (25 man)
On fights, especially on progress raids, pulling up big raid damages quickly!!! before anyone dies from random damage splashes, felt easier with crit than mastery.
So i imagined : crit: more burst kind of healing , mastery: more lazy slower backround healing.
On the whole encounter, mastery may give you a bit better theorycrafting numbers alltogether, but if people start to hit the bucket during the bigger aoe damage phases, with us, being one of the dedicated raidhealer, i would feel sad to the bone.
i cant give you numbers, i am not a theorycrafter, i play by guts.
But i respect the people of this forum, so it does not hurt to ask for advices.