Top 5's in each position. Who has the best group of running backs? Receivers? Defensive backs?
To be good on one side of the ball, a team must work together in multiple areas. Say we're debating about somebody's defense, and we know that talking about very basic statistics like sacks and interceptions just aren't enough. The nose guard lines up on the center's weak-side shoulder with an assignment to get over to the B gap, making two offensive linemen to open up a hole for the running back to go up the middle. The linebacker wants this to happen, because he's responsible for that A gap, right where the running back could be headed.