Our run defense wasn't even TERRIBLE... it was about average, but because our pass defense was so dominant, and our offense was so non-existant, teams were able to establish the run against us. We couldn't sustain drives, and teams knew that, so they would pound the ball down our throats to establish ball control. Moreover, because we had a bottom 10 scoring offense, teams were always "in the game" or winning against us - another reason why teams were able to keep a balanced attack against us and allow teams to keep running against us.
If our offense actually did something worthwhile, you'd see how dominant our defense would have been against the run AND the pass. Overall, even with our bottom 10 ranked offense, our defense still ranked in top 10 overall in a lot of categories and was very tough consistently all season.
It's just ridiculous to see people say "oh our defense wasn't even great" or "oh our run defense wasn't good anyways" it shows such an amateur understanding of the game.