Is it Portis or the Offensive line?

[Stacks42]

im not saying they are better they are def back ups, but they seem to find holes where Portis cannot. Portis runs for 3 yds/carry, Cartwright gets in there and runs for 13 for a TD, whens that last time you saw portis do that? Im saying when they get their shots they move the ball, throw Nemo in there. I dont care how much we spent on Portis if someone else can do the job then let em, hes not doing it