Your boy is just not very good. There is no empirical evidence on how good or bad Weeden would be with the current Browns team, but Mayfield's "greatness" can only be attributed to playing the easiest schedule in the NFL and then drawing a gasping Steelers team. Your hero couldn't get the job done with a sad Henne in the game after the best player in the league had to leave due to an injury. He couldn't finish, he choked.