False. Their dmg is really similar, it depends on many factors, if theres SI or not, if hero is using ST or claymore, etc, the real diference is that hero is a pretty straightfoward class to play,meanwhile drk has to manage his hp to do it, so, if ure heavily multiclient or have slow eye-finger reaction, yes,heros are far superior, if not usually heros are going to be stronger by 2-5%