There has been 38 games so far in which an offense has run he ball more than they have passed. They have a combined record of 31-7.
These games include teams with Pro Bowl level quarterbacks such as Arizona, Kansas City, Buffalo, and Green Bay.
Cleveland has run more than thrown in just as many games as the Cowboys this season, four games.
The Chicago Bears passed 17 times against the Lions ands 21 times against the Raiders and won both.
Any team with the ability to run the ball effectively is going to do that. It keeps the opponent off the field by eating the clock, keeps their own defense fresh, and it wears down their defense. It forces the safeties to play closer so that when the quarterback passes, he becomes more efficient.
Dak Prescott is payed to be a quarterback that can take his team to the Super Bowl. He isn't payed to be a prolific passer that plays in a lot of Pro Bowls. His 2nd place in passer rating so far this season is not due to the volume of passes, obviously, it is due to the choices he made and the accuracy of his throws.