whys this so hard for you to understand. those numbers werent a function of him performing well or even averagely. they were simply a function of how many carries he had. and its quite certainly not something that will ever happen again.
You're right, he wasn't even average in those games.

Guys, peddle this junk somewhere else.
Dude, he wasn't average. Actually, what is the NFL ypc average? Right around 4? 3.7<4.......so I would say not even average.
He sucked. He burned 39 downs against Oakland and only got 130 or so yards for it. That's awful production.
If a receiver has 39 catches for 130 yards, is that a dominating performance? No.
The guy that has 5 catches for 130 yards is more dominating in a massive way...he got the same amount of yardage and used up 34 less offensive plays. He was an incredible asset...just like 130 yards of of 15 carries is WAY more impressive (or should I say "actually" impressive) when compared to 39 carries for 130 yards.
39 carries should damn well be an NFL record if we want to call it dominating. And this is coming from the guy who told you all it would happen a week or two before it did...