It’s exactly 16% for me if I don’t crit, but it depends on a lot of variables.
Here is my post in the beta forums:
Somebody posted some tests last week. I stumbled across them while I was looking for something else:
Survival of the Fittest has nothing to do with Spirit Beasts. Besides that, I’m not really sure where this is better than having BL and Leech. Jeeze. It’s no comparison.
I hit the wrong reply button. I was talking to the OP.