Lots of things are unbalanced and out of place in PvP currently. Warlocks have shields that activate on melee-hits whereas Titans have to get a melee-kill in order for it to trigger. Sure, you can use No Back-Up Plans for a shotgun-kill trigger, but there are more effective exotics you can equip for a Defender and sometimes 1v1 engagements are outright stupid. Then there's the problem with outright crap hit-detection that applies across the board for any melee that isn't ranged, but I digress. Hunters who run Nightstalker and use a build with high strength/discipline and the three perks that maximize a smoke n' nade combo are not so different than Warlocks running Sunsinger and using their burn-bolt setups. Some players are outright crap at using them while others are far more proficient.