1000 yard rusher is the most misleading phrases in the NFL. All you have to do is rush for 63 yards a game and you will be a 1000 yard rusher. DD is going to be a 1000 yard rusher this year. But other than the two 100 yard games he had lately, can you say that he has been great this season, or has he been just average.
I think it should be more like 1300 or even 1500 yard rushers as the measuring stick for good backs. But that is just my opinion.