Yes, I have used these primarily in offline CCM and also offline single exhibition games. CPU rushing has been great. It's been a complete variety, which is exactly the way it should be. I've had 100 yard rushers against me a few times, and a few other times have completely shut them down, with everything in between.
For instance, I was Carolina, and against Tampa Bay, Doug Martin rushed for 114 yards on 19 carries. However, the very next game in which I was Denver vs. Pittsburgh, Redmon only had 19 yards on 14 carries. I've also seen several 20 rushes for 70 yards type games. If anything, it might still be a little hard, but I'm never really done tweaking my sliders. As I get better and better on offense with more play, I will continue to shift CPU sliders up.