I don't think shoulder charge is OP and don't think it needs a nerf (or that [i]anything[/i] needs a nerf, really). That said, primaries are definitely not a way to take down an approaching striker and of late, even a shotgun needs to be a headshot (which is not the easiest thing to get when the striker is mid-shoulder charge). Grenades and (mainly) melee are a little ridiculous as suggestions, as well. But the rest make sense and again, shoulder charge is far from OP. If you see a titan [i]running[/i] at you, you don't even need to know his or her subclass. If you're on your hunter, jump straight up. If you're on titan or non-voidwalker warlock, just float straight up like a delicate flower and hope the striker doesn't have dem greaves. Also, shoulder charge is not the easiest thing to do, especially against good players. Sometimes the shoulder charge bounty takes me a whole match when I usually finish all other class-specific ability bounties with my first kill. I'm not saying getting shoulder charge kills is super-hard, but it does take practice and skill to execute properly against players who know about that whole jumping thing.