Because I am absolutely not. I know they don't define everything but damn if it's not a bit disheartening. Maybe I'm terrible, but I'm really struggling out there. Anybody else feel my pain?
Edit: Maybe just being able to get somebody down to 20-30% and staying on top of them is all we can expect? Since our success is based on our healer's ability to heal, perhaps if you can nudge them down that far that'll show success with backup. Shame that it has to be this way.