the same improvement over the year as opponents got weaker. You're free to see things pessimistically, but from my perspective, there seemed to be a clear change in the RBs for most of the RBs despite many injuries.
If it was just easier competition, then we would see the same behaviors but with more success. Instead I saw new and different behaviors over time. This was true comparing bad defenses to bad defenses. Keep in mind we have data from last year to use as well.