Yup, nobody says this. Certainly not Detroit Lions fans.
I just Googled Barry Sanders standard deviation and I found this:
http://www.ign.com/boards/threads/w...comes-to-evaluating-a-running-back.108528866/
"I much rather have a running back who has 4.0 ypc than one with 4.5 if the one with 4.0 has much less deviation."
"Because Barry Sanders would then be the worst RB of all time."
Where someone else said Barry Sanders would be the worst running back of all time if you measured by standard deviation. Ha! I wouldn't go that far. But my point is its nice to have an occasional 50 yard run and 60 yard run. But if your other 20 carries are between -5 yards and +1 yards, you'll never sustain any drives. And Detroit had whom most people would consider one of the greatest running backs of all time, yet they sucked. How could that be possible?
I'll never find it anymore, but in one particular game he had like 150 yards and 2 TDs and they put up on the TV late in the game his yards per individual carry, and it went something like -2, 0, 1, -3, 1, 25, 0, 2, -3, 1, 4, 55, -1, 0, -2, 1, 0, 0, 60, -1, -2. That will put you in 3rd and long quite a bit and make it damned near impossible to convert many 3rd downs without having to pass all the time.