Davis always had a ton of potential, but never showed a propensity to learn from his mistakes. If you were an NFL WR going against Davis you were virtually assured that he would fall for the double move. IIRC, Jennings in GB was the first WR to get him on a double move this year. The article points out how much listening and film study he has done. IMO that is the difference between the rookie who was the worst starter in the league and the second year player who has a decent chance to be listed as one of the best CBs in the league.