Going back to Aaron Smith and Ziggy Hood, whether Aaron showed up on the stat sheet, you knew he was on the field. You saw him disrupting plays when he was single blocked or holding his ground when double teamed. Ziggy does not win individual matchups and gets absolutely blown up when doubled.

Look at McFadden's shorter TD run. Ziggy got blown back into the endzone. He allows the offense to move the line of scrimage.