Warlocks Voidwalker super are particularly dangerous, along with the Hunters Golden Gun as a couple of shots take down the shield, but lately hunters haven't been wasting it. Bladewalkers are particularly fun, get a shot off and a couple of melees and you can take them down. I usually run with my exotic helm so it blinds bladewalkers as well. I'm personally fine with my super being countered by a super, because all it means is that thats a couple less people dieing from another team members super, especially the area of effect from VoidWalkers, and Hunters almost wiping teams out with their Golden Gun and BladeWalker.