It seems he will get 10-15 touches a game regularly in this offense.
Hopefully this prediction is based on more than just the fact that he had 11 touches yesterday. I'm not sure I'd use yesterday's game on its own to say that Bell seems like he's on his way to 160-240 touches this season. Neither would I use yesterday's game to say that it seems like Bush will get 25 touches regularly (400 for the season).
The Lions ran nearly 80 plays yesterday. They had 28 first downs and had the ball for over 36 minutes. That won't do that every game.
My projection was based on a combination of factors:
(1) Bell has been emerging as an offensive talent since the middle of last year.
(2) In the last ten games last year, he averaged 9.5 touches as the COP back to LeShoure;
(3) Bell has overtaken LeShoure as the #2 RB for the Lions (LeShoure was a healthy scratch for game 1);
(4) The Lions have an uptempo offense which leads to a higher than average number of offensive plays a game - last year, the Lions averaged 75 offensive plays a game;
(5) Reggie Bush is not only an injury risk, but tends to get nicked up during games and takes himself out pretty often. He has been like that ever since he entered the league.
Thus, I projected a modest up tick in Bell's touches. I realize that there is potential for great variation week-to-week and that Bell benefited from a couple of short TDs this week that may or may not happen in other games. At the same time, I think you have to look at Bell getting a real piece of the offensive pie this year. With Bush being able to run routes as well (it looks like Broyles was also a healthy scratch for game one), there is room to get Bell in the backfield on more snaps.
I will amend my statement on Bell v. Bush running to say that Bell looks like a better between the tackles runner. That combined with his solid blocking will help keep him on the field this year. And Bell's involvement should help keep Bush more healthy, although I still feel he will break down at some point.