Joey Porter Jr doesn’t have a problem with confidence, especially in his abilities. Just ask the second-year Steelers DB. Who is the best cornerback in the NFL? “Me for sure,” Porter told The Athletic following an OTA practice last week. See, you might think it’s merely cockiness, that Porter is a brash, preening DB who purposefully forgets about the bad plays only to remember the good. That’s how a corner or a safety gets through a game. But also, if you can back up the talk, it’s not cocky. There’s a point to be made that Porter, the Steelers second-round draft pick from 2023, is one of the …