His head also bounced a weird way when he hit the mat. It's not so much the blunt force trauma that causes a concussion as it is the brain moving around within the skull on the rebound from the initial hit. If you watch the rest of the match, it is obvious that Cody was barely aware of his surroundings. Props to that dude for finishing the match in a professional manner. He definitely has his father's toughness. If it is a minor concussion he will bounce back soon, but the shoulder injury is more detrimental to him.
I like how you described the concussion, spot on. Cody does have his fathers toughness as well, he carried on that match like a champ even though he was out of it, a true professional. He did the exact same thing when Orton legit busted him open and carried on like it was nothing.