Well, when I say stuffed, I don't necessarily mean a net loss of yardage. 0, 1 or 2 yards are all pretty well stuffs, in most instances (not all).
At any rate, I looked this up after the Titans game, when everyone was going gaga about how well Slaton did. His runs in that game were (in order): 1, 50, 1, 3, 6t, 25, 0, 11, 7, 3, 0, 4, 2, 2, -2, 3, 1, -1. That's 13 of his 18 carries that went for 3 yards or less. I love the big play potential, but I prefer a consistent running game to complement it. We're just not there yet.
Against the Ravens, Slaton had four carries for 7 yards. I'll just say he didn't have enough carries in that one and leave it at that. Against Minnesota, he had 16 carries for 62 yards. 9 of those carries were for 3 yards or less. That's better. 9 of his 15 runs against the Bengals were for 3 yards or less. 17 carries for 80 yards against the Lions, and 37 of them came in one run. As I said, I love the explosiveness, but we don't have a steady run game to complement him. Furthermore, as I said above, when we absolutely need to run the ball, like to run the clock out against the Colts, or to punch it in for a TD, Slaton's not the guy, and we really have no one else at this point.
So yeah, the running game has improved, because you have to take into account big plays. What I'm referring to is the ability to consistently run the ball. We do well between the 20s in down-distance situations that aren't obvious running situations. We don't run well when it's 3rd and short, or near the goal line, or at the end of a game to preserve a lead.
None of this should be construed as anything against Slaton. I think he's a valuable guy, and he would be the perfect complement to a back like what DD used to be.