Colts won’t change their running back rotation

Statistically, there’s no comparison between the Colts’ two running backs, Trent Richardson and Donald Brown. Richardson has 96 carries for 272 yards, an average of 2.8 yards a carry, and two touchdowns. Brown has 55 carries for 323 yards, an average of 5.9 yards a carry, and three touchdowns. So doesn’t that mean the Colts…