Charger Running Backs – By The Numbers

What conclusions can we draw from the following stats?
Donald Brown – 59 carries, 126 yards, 2.1 avgBranden Oliver – 57 carries, 249 yards, 4.4 avgRyan Mathews – 23 carries, 71 yards, 3.1 avgDanny Woodhead – 15 carries, 38 yards, 2.5 avgShaun Draugh – 10 carries, 19 yards, 1.9 avg
Week 1 (Arizona) – Mathews: 12 carries, Woodhead: 6 carries (team avg 2.2)Week 2 (Seattle) – Mathews: 11 carries, Woodhead: 8 carries, Brown 7 carries (team avg 2.7)Week 3 (Buffalo) – Brown: 31 carries, Oliver: 3 carries, Woodhead: 1 carry (team avg 2.3)Week 4 (Jacksonville) – Brown: 10 carries, Oliver: 9 carries (team avg 2.1)Week 5 (NYJets) – Oliver: 19 carries, Brown: 9 carries, Draughn: 10 carries (team avg 4.0)Week 6 (Oakland) – Oliver 26: carries (team avg 3.5)
Possible conclusions….
1. Our offensive line has improved in run blocking2. The Jets and Oakland have poor run defenses3. Oliver is our best running back4. Other?