What you said makes a lot of sense now.
I think there's a difference between being the "best" and being the most valuable. I think AD is the "best" player in the league but I'd rate him between 6 to 16 being the most valuable. All things being equal more or less a top QB is always going to be more valuable than a top D player. That's what the money says too.
I really hope AD retires as a Ram. The NFL could use some players who become local legends due to their commitment to the team.
