Titans aren't invincible in smashes. I've killed them many tines with golden gun in close range. It's scary but satisfying. Hunters have it easier in targeting but we uh...die easily in our supers bc of prolonged exposure and no over shield when we melee. Unless you shoot a titan or warlock right before they use their super then you're screwed. With bubbles you just need another super to ruin their day. With self res all you need as a hunter is a throwing knife and tripmine.