In 2014 Demarco Murray set the new Cowboys single season rushing record.
Not unrelated, it was also the only season that Tony Romo was the #1 ranked QB in the league. It was the season in which Tony threw the fewest passes while playing a full season of 14 or more games.
Dak is 27-1 in games with 28 or less passing attempts for a 96.4% win rate. For all QB's in the past 10 years with 10 games of 28 or less passes, Dak is ranked #1 in winning percentage. McCarthy knows this which is why he stated that he wanted to run the ball more. It's pretty simple, the more the Cowboys run, the less Dak passes. The less Dak passes, the more they win.
This is not an indictment of Dak's abilities as a QB. The simple fact is that Dak has many great attributes as an NFL QB, enough to qualify him as one of the best. However, all QB's have differences in some respects and Dak is not one of those naturally gifted, strong armed blue chippers that get taken in the top of the 1st round.
Dak can be extremely successful when used the right way. If Garrett or Moore wanted a prolific Coryell type passing game then they chose the wrong quarterback, that just isn't Dak. However, if the Cowboys want a strong running game complemented by an opportunistic passing game with the leadership of a QB that protects the ball and keeps drives alive then Dak is their man.
Ironically, Dak could be the league MVP if the Cowboys are a balanced offense with a strong running attack.
Of course, that begs the question, why wouldn't Pollard be the MVP then? Well, when you look at the last 20 league MVP's, 18 of them have been QB's. It's a simple NFL reality that QB's get the love, especially in today's game.