Quote Originally Posted by mrfigglesworth View Post
Champion debuffs and some other classes debuffs work the same way. probably has something to do with the fact that the -melee dmg are subtracting from the mob's current mastery, which I assume is somewhere in the 200-400% range based on the tier. imo WAI
It's probably WAI but at the very least that chart highlights that these skills are not worth traiting in their current form.