This is so very true. Shotguns are OP in close quarters the same as snipers are OP in the open. It is because that is what they are suited for. I say OP not as in they should be balanced, but OP as in that is what they are made for. Of course some guy may tear it up to the point of people complaining. That guy is just good, using his map knowledge and his weapons ability to the max. If he is using a shotgun in close quarters, well don't go chasing after him with an assault rifle.