I have also noticed this. Nerfing dmg is one thing but that 10%nerf cancels out pet % dmg. My friend with hj has higher dmg outside of pvp than i do, i have a glacian (both rogues) but in pvp his dmg is lower. Lately although ive seen my dmg to not be nerfed in pvp so idk whats going on. They should remove the nerf especially now since us rogues cant refill mana quickly with a pet swap, and with no mana for a rogue equals no dmg.