Without "Edge" do the Colts lose their edge?

Losing Edgerrin James (Edge) to the Cardinals hurts the Colts in a pretty big way. With Edge the Colts were able to attack a team on land and in the air. Peyton would be able to light up the sky with passes to Harrison and then when the defense seemed to get a handle on the passing game the Colts would just give the ball to Edgerrin for him to run all over the field, losing Edge and trying to win is like trying to win a bike race on a unicycle, it could happen a couple time but each time it will be hard.