No RB who is truly great would average 3.2 ypc at the age of 22. Literally one of the worst seasons ever for the type of volume he saw that year.
Let any RB run behind the best OL ever and they will look amazing (even "scrubs" like Anderson and Brown)
If that sounds like hyperbole, consider the Football Outsiders stat Adjusted Line Yards, which takes all running back carries and assigns responsibility to the offensive line. The stat magnifies plays when the running back gets tackled for a loss, as that’s usually the result of a blocking breakdown. And the stat treats any gain longer than 10 yards as if it were only a 10-yard gain, as anything beyond 10 yards usually isn’t the result of an offensive lineman’s block. By Adjusted Line Yards, the 2018 Rams set a new NFL record, with 5.49 adjusted line yards per carry.
Whether it’s Anderson stepping in from off the street and averaging 7.0 yards per carry, Gurley averaging 4.9 yards per carry, or Gurley’s backup Malcolm Brown averaging 4.9 yards per carry before he was injured late in the season, the Rams can run effectively with anyone carrying the ball. Enjoy watching Andrew Whitworth, Rob Havenstein, Rodger Saffold, Austin Blythe and John Sullivan block on Sunday. You may never see a better run-blocking offensive line.