From what I saw of Howard and Langford in the game last night is pretty much what Haweye21 is saying. Neither RB looked very good aside from each having a big run where they actually had good blocking to work with.
Howard 9 rushing attempts 45 yards with a long of 36 yards. That is 8 rushing attempts for 9 yards aside from the big run. 1 yard per carry besides that.
Langford 3 rushing attempts 31 yards with a long of 23 yards. That is 2 rushing attempts for 8 yards aside from the big run. 4 yards per carry besides that.
Howard was more effective as a receiver in the game, but as noted a lot of these receptions came in garbage time with the Cowboys defense laying off somewhat and letting the Bears have that.
I was actually somewhat disapointed with Howards yards after contact, as I thought that was something he does better than Langford does.
Howards efficiency as a receiver is something I am impressed with, as I thought Langford was a better receiving option than Howard, but that doesn't seem to be the case. This is where Howards power may come into play a bit more, in one on one situations, he is able to break tackles and gain yards after contact a bit better than Langford when out in space.
Several of Howards runs aside from the big one he was being gang tackled by more than one defender, so harder to make something happen there compared to a one on one.
I do think Howard is more of a player that John Fox prefers, because of his ability to gain yards after contact, compared to Langford and that is why I think he is the better option between these two RB in the long run. I wouldn't say Howard looked any better as a runner than Langford did in this game however.
I think the Bears let their best RB, Matt Forte leave as a free agent. I didn't expect them to do that and after 3 weeks it seems like a bad move on their part. Saving money is not a good enough reason. If they really wanted to win, I think they should have kept Forte who is a really good player and better than either of the guys they have now. I cannot really explain why they did that unless Forte didn't want to stay with the team.