I don't think Bears are #1 bc of their top run defender/one player nor the Saints are lower just because their top run D isn't as good as the Bears. Bears explosive (5.1%) and run D stuff (13.1%) add up to 18.2%, leaving out over 80% of run D plays and the Bears probably do a pretty good job at limiting YPC on those runs. They seem to try to limit explosive runs, at the risk of not being able to stuff runs for a loss. I guess their D isn't allowed to gamble a lot and have strict assignments on every play.
I guess Saints do very good job on getting TFL's and not giving up big plays on the run game but then on other running plays they give up relatively more YPC than other top run D teams.
Have to admit, Turbin has been a complete no-show for us this year, regardless of the suspension. I thought he could have been a factor in the Pats game, but I don't remember him getting a carry? I thought he was going to be our power guy but if we keep playing from behind he's somewhat useless. I think the kids have done an adequate job of pass blocking as well, so Turbin's worth is even more diminished. Probably his last year with the team.