Well it seems to me that this may not be a "one or the other" situation when it comes to the offense.
The OL is playing poorly. That's a fact.
Talent, coaching and play calling all factor in.
The RBs are playing poorly. Sure the OL is a big factor in that be not the only one.
Both Singletary and Moss cannot get to the edge. That's a fact and makes run defense much easier for teams.
The Bills running game is totally one dimensional.
I'll repeat my views that I would like to see. 3 RBs dress for every game. I want a speedy back, a big power back and an all around back.
The weekly opponent determines who gets the most snaps that week.