This is an interesting breakdown of the RBs in this draft.
http://www.allprofootballsource.com/2015-nfl-draft-rb-production-metrics/
James Cobern, the writer, uses a metric based upon the proportion of a teams total yards the RB accounted for:
Not a bad list.
Tevin Coleman comes out top based upon this metric and is within the top 5 percentile which would put him squarely amongst the above group (drool!). Melvin Gordon, David Cobb and Todd Gurley are the next three and all feature as a top 10 percentile back. Gurley is noticeable because of his injury and yet still ranks this high. And as the writer notes, Gurley is the youngest back in the class at 21.
The Abdullah entry is interesting:
Hopefully The Exalted One will enjoy this post because it's all about production
Well worth a click through and read.