He had over 100 more yards on 80 less touches and 8 more TD's than Bell. That's pretty clear cut. At least in terms of an overall RB. Hunt and Ingram had a better ypc but just barely. Gurley's overall production makes up for that IMO. Plus, he didn't even play the last game, did he? Tack on another 130 yards and 1-2 TD's to his totals and he's really far and above the others.