I've seen all the games, and the bottom line is Duckett has looked good. He was obviously in the dog house, but he's working his way out.
And the SD D was part of it. They wanted a bigger runner and wanted to pound it more.
Honestly Dunn was WAY WAY out performing his usual norm. He's not an elite back, he's been split duty for the last 4-5 years and obviously the Falcons aren't going to give him the ball 25-30 times a game. It just won't happen. He's been hurt like almost every game this year, he just can't handle the load.
Given those two facts its not surprising Duckett is getting some action. If I'd have to wager, I'd bet on split duty the rest of the way. And if any back is gonna get 20-25 carries, it's Duckett cause I can see Dunn missing some time. He's always limping in the 4th quarter.