when every defense in the NFL playing against the Texans put 8 men in the box, because they KNEW David Carr stank at the NFL level and wasn't going to beat them on his best day, and waited for DD, knowing that he was a hard runner and they would need more than one tackler to bring him down, I think that pretty much sums up who the real offensive threat was this year.
DD was a diamond in the rough and Casserly was either the luckiest GM in history or is actually a decent evaluator of later round talent.
If DD leaves this offense and they keep Carr we will be 1-15 next year, if we are lucky.