Like any other shooter, shotguns are meant to kill u from close range... They are designed to fit that run and gun playstyle, as opposed to a range-dominating scout rifle or hand cannon. As long as you play in the range the weapon is intended for, every weapon can be op and require nerfing. Running blindly into a corner with a scout rifle isn't going to do you any justice. I find hand cannons op for clearing out jump-happy people and snipers extremely efficient for clearing out those flag campers from far. All depends on whose perspective you play from.