Gonna have to stop you rrrriiiigth there. Long-lasting? Yeah. OP? No. The Hunter's Supers, just like any of the other Supers in Crucible, are all one hit. The difference is that they have a much less chance of missing with their's because they can use it multiple times within one use. Unlike the other supers, if you can see it coming, you can shut them down. Gunslinger has no damage reduction when using Golden Gun, so as long as you can avoid being seen by them, or avoid their 3 shots, you can take them down easily. I've even melee'd one to death before, and killed another one with a grenade. The Bladedancer's Arc Blade, while it does have reduced damage, can still be taken down if you can react fast enough and see them coming. A fusion rifle, shotgun, another super, or a sniper can take them down. Hell, even an autorifle or any primary with high rate of fire and/or the Full Auto perk can take them down.