Basically Sam is correct in his analysis of last year's performance, but I don't know that historically this is much of a thing that we need to be indicted on as fans. A 3-year stretch of 2nd, 31st, and 7th nationally is pretty good, followed by an admittedly down year although injuries probably played a part.
But I get what he is saying in that we shouldn't jump to the conclusion that Armstrong + Abdullah = an overall outstanding rush game. That's a pair that was 63rd nationally in ypc against winning teams last year. No doubt that our running game will be above average, likely good, but will it be elite? Let's not jump to that conclusion.