In the Vikings game there's a play that just totally summed up Green. They had a CB who in the game was having back spasms, Bashaud Breeland. Locked up man to man Green beats Breeland untouched off the line down the right sideline. Kyler drops the ball in perfectly for a 29 yard gain and Breeland tackles Green. A younger AJ Green scores on that ball but Kyler knew Green doesn't have that gear anymore he hit him in stride but even an injured Breeland easily made up the cushion despite completely whiffing at the LOS and caught him.
That was the 2nd game of the season but that happened over and over last season, AJ won at the LOS but his lack of top end speed now allowed the D to just recover on him. I recall in some of the game threads people saying Kyler has to throw that ball more in front etc, it was really apparent why he didn't he realized AJ doesn't have the gear to separate and get it if he beats the guy off the LOS you have to throw it to him right now, or the guy is going to recover and catch him very quickly.