Check out Bama's and Clemson's rushing stats from last year. Bama had 1 RB with more yds than Hurts and another with just under the same yds as Hurts. Watson wasn't close to leading rusher for Clemson.
OSU in '14 would be a good one to look at too. To get to upper echelon IMO ... the RB position (even if split with 2 backs) should be at least 1 and a half to 2X what QB rushes for. But then that is IMO.