Quote Originally Posted by wlakiz View Post
Inner beast is not a cooldown, it is part of Warrior's core mechanic, which surpasses PLD's 20% core mitigation is per my example. Popping Infuriate is to maintain the heal boost, if you don't use it, you can still get 5 wrath back in 3 rotations.
Inner beast isn't but Infuriate is.

If you don't use infuriate you lose a significant amount of healing which puts you WAY behind the 20% damage mitigation, and you're talking about mitigating part of one big hit, while the damage keeps coming after that one hit. It takes at least 20 seconds to get back up to 5 stacks. That means if you don't have infuriate up that you take significantly more mana, and significantly more GCD's to keep up despite mitigating more of that single large hit.