The Vikings have relied on the Peterson , the NFL 's leading rusher entering Week 13 , to wear down defenses in most of their wins .
But the play of the punch-less Vikings offense was even more alarming .
The Vikings have relied on the Peterson , the NFL 's leading rusher entering Week 13 , to wear down defenses in most of Vikings ' wins .
But the play of the punch-less Vikings offense was even more alarming .