They were very good last year, top 5 in yards per rush, and they were also top 10 in redzone TD percentage allowed. Have to think they're even better this year with Wagner added and Jones in year two.
I do think losing Von affects the run game too. He set a dominant edge for us. But still the Rams should be very hard to run on, without a doubt one of the best in the league. And that makes me happy, as there are few things I hate more than watching a team run the ball on our defense.