No worse than NE’s has been over the years. Look at what a heap the likes of Ridley and Vareen have been once they flew the coop. RB’s (with a few exceptions) are only as good as the line creating the holes for them.
I honestly think you could take the most average back in the league and they would get 1200 yards for Dallas.
Look at McFadden in 2015…
I think that Blount, Ajayi the Eagles have two decent hammers to burn clock and wear teams down in the 2nd half.
They do lack a decent 3rd down/change of pace back IMO. The likes of Sproles.