I didn't track my stats but the run game seemed fine to me. It takes some getting used to the ball carrier and you actually seem to need a good OL. I did a fantasy draft and took AP and an OL full of 90's players and I was shredding defenses on all pro. I've been able to run fairly well with the raiders on all pro as well. I haven't touched AM though so maybe that's where some people are seeing issues.
I like it better than some past madden games where blitzing linebackers would just go straight for the qb so run blitzes could be useless at times and when the cpu would be desperate to get a stop it would blow up in their face as you ripped off a big gain.