Hunters are more lone wolves and supposed to be cocky and jump head first into things while the Warlocks are scholars and think about things for a long time and commune with each other before doing anything. So the Warlocks probably see Hunters as being less intelligent and too brash and the Hunters obviously wouldn't like being told they're stupid and probably think Warlock take too long to do things and maybe are weaker because they don't do things by themselves. I don't know just what I think.