According to this article, DJ's combo of height, weight, strength and speed is ideal.
http://bleacherreport.com/articles/...-speed-designing-the-perfect-nfl-running-back
When you watch the video, the NO safety has HUGE angle on him and Johnson just runs by him. Pause the video at the 8 second mark and look at the position of the players.
http://www.nfl.com/gamecenter/20150...ameinfo|contentId:0ap3000000529666&tab=videos
Nice mention of CJ in there too.
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