Ah, divine sacrifice! One of my favorite spells. One of the more interesting and confusing in my spell book too. It’s getting a face lift in patch 3.3 and I wanted to try my hand at figuring it out. I’m not the first to touch on this topic, so if you want to see what the pros are saying, check out Honershammer’s post as well as the thread on Plus Heal. There are quite possibly others discussing this, but I have yet to find them.
For the sake of simplicity, lets use for our examples, a prot paladin with 40k health and a holy paladin with 20k health. We can imagine they do their 5 mans with 4 friends their 10 man raids with 9 friends and their 25 man raids with 24 friends.