by Vaulken » Fri Mar 06, 2015 4:17 am
Rage is based on damage done conditioned by the level it's done at, so the better your gear compared to your level the more rage you will generated based on the mobs you're attacking.
You generate no rage when not geared optimally and you generate too much rage when you're geared appropriately (epics).
This is why Blizzard changed rage several time to be more and more normalized because in Vanilla it's broken in every state regardless of when/if it does or doesn't favor the warrior. Spam sunder and rend don't use heroic strike till you're flooded with rage 60+
A full stack of sunder increases your damage and therefore your rage by 30% at equal level and rank, it also gives you a chance to force overpowers while generating rage and dealing increased damage over the fight, this continues to be important for generating sufficient rage for execute when you get it.