Originally Posted by Vihermaali

I don't take Empowered Healing at all, because I benefit more from taking Blessed Resilence.

Yesterday on Freya 3-elder kill I did 14,46% of my total healing with Flash Heal (I didn't cast greater heal at all). 387 452 healing done by flash of my total of 2,679,284. Binding heal did 100 609, so combined with Flash it totals up to 488 061, which is 18,2% of my total healing done.

I'm using WWS numbers so those don't include overheals, but the overheal% was roughly the same on all so I'll ignore overhealing. I use Freya as an example, because for me it's hardest fight in Ulduar, healing-power wise (only fight I haven't done or seen is Algalon).

If I switched the 3 points from blessed resilence to empowered healing, I would lose 3% of my total healing and I would gain +12% to Flash/Binding Coefficiencies. -3% total healing would lead to 2 679 284*0,97 = 2 598 905 points total.

Formula for flash healing done would be -->
(2040 + (0,12+1.5/3.5)*2800*1,88)*1.1 = (2040 + 2888)*1,1 = 5420 instead of
(2040 + (1.5/3.5)*2800*1,88)*1.1 = (2040 + 2256)*1,1 = 4725
5420/4725 = 1,14708 = 14,7% increase in healing done by Flash Heal.

Formula for Binding heal is same as flash, but with an additional *1,1 & *2 in the end
(2230 + (0,12+1.5/3.5)*2800*1,88)*1.1*1,1*2 = (2230 + 2888)*1,1*1,1*2 = 12 384 instead of
(2230 + (1.5/3.5)*2800*1,88)*1.1*1,1*2 = (2230 + 2256)*1,1*1,1*2 = 10 852
12 384/10 852 = 1,1411 = 14,1% increase in healing done by Binding Heal

So if Binding Heal is 3,755% of total healing done it would do 2 598 905*0,3755 = 97591 healing done. 97591*1,1411 = 111 360 --> 13 769 increase in healing done by this spell

Flash was 14,46% of total healing done, so 2 598 905*0,1446 = 373 202. 373 202*1,147 = 428 063 --> 54 861 increase in healing done.

2 598 905 + 13 769 + 54 861 = 2 667 505 healing done after losing 3% overall healing and gaining 12% coefficiency to Flash & Binding Heals. That is LESS than my original healing done (hopefully my math didn't go wrong anywhere). So in other words, I'm better off with taking blessed resilence, than empowered healing.

The non-math version: the less you use Flash/Binding/Gheal, the less you benefit from empowered healing. I almost never use greater heal, if I must tank heal I'll use my disc spec. Flash and binding heal are both spells that are not meant to be spammed: spamming them is a bad sign, especially when you are raid healing. There are better tools for healing masses of people. 3% from blessed resilence improves ALL of your healing spells, and since I use other spells than flash/binding a lot when raid healing, it's better to have ALL of your spells improved than only 1-2 spells that you almost never use anyway. Around 70% of my flash heals cast that fight was Surge of Light procs.