Ohh my... Wow, just wow.
In all fairness, I will throw you a bone here. No one is perfect. Everyone can improve. Everyone makes mistakes. AA included.
But, if you think that AA is not a leader for this team, that he doesn't show leadership skills, then your threshold for attaining leadership status is simply impossible to attain. No player in the history of NU football, or college football, or the NFL, or any sport on the planet, no military commander, coach, president, politician, CEO, no human being, has ever or will ever be a leader in your eyes. Basically, you should remove the word "leader" from your vocabulary because in your world that concept does not exist. It is a figment of your imagination. Tommie Frazier, Grant Wistrom, Johnny Rogers, Scott Frost, Ahman Green, Eric Crouch, Turner Gill, Mike Rozier - they all made mistakes and therefore don't meet your threshold for leadership.
In my book, AA exemplifies all that is right with college football. Being a responsible young man, leader, athlete, student, volunteer. He has his head on straight and anyone would be hard pressed to find anyone in the history of college football who could separate themselves from AA in leadership qualities.