Two very simple reasons.

1. The O line is just plain bad at run blocking. That said, Brown seems to make bigger plays out of his few running opportunities than Addai does. Addai is still a solid RB also, but just not as talented as Brown.

2. The coaching staff and Peyton (he takes some blame because he is the ultimate play caller) are simply not committed to running the ball. The reason why we have terrible stats (60-75 ypg) is because we only run the ball about 15-20 times a game. That’s not enough. If we are blowing a team out, or in a close game, we should be running the ball on a consistent basis or at least give the other team the threat of a run. To be a complete team, we need to stay as committed to running the ball as we have committed to stopping the run.

Which one extends an athlete’s career more, bong-weaving classes at the University of Thailand or working out 24/7?

I say Edge has more left in the tank—it’s a matter of an offensive system that fits him and a decent price point. If the Hawks are still paying him, then his price should be pretty low. I assume he can (1) pickup a blitz as well as ever, and (2) catch out of the backfield as well as ever. I also assume (3) his running is NFL average. Behind a mediocre line, that’s 3.3 YPC.

Which makes him an adequate depth pickup who offers intangibles nobody else can (knowledge of the O system and communication with 18). If we are picking up somebody to be the tailback 40-50% of the time, no, his tires have lost too much tread. If we need somebody to be 100% reliable 10% of the time and maybe surprise us with a 10 yarder now and then, Edge is the man. 5 touches a game for 30 yards, plus two key blitz pickups…. That would be helpful.

Plus his big brother persona.