For a guy that walks on water you'd think he'd know how to use his QB. Folks need to dig a little deeper.
Someone better tell Garrett that he has a tremendous play action QB because he certainly doesn't know it:
http://www.footballoutsiders.com/stat-analysis/2014/2013-play-action-offense
"We're not trying to make this about the NFC East, but that division just has some of the most interesting play-action offenses.
Someone might want to alert Jason Garrett, because for some reason the Cowboys have ranked 30th, 32nd and 30th in play-action usage in his three full seasons as head coach. If Tony Romo wasn't effective with play action, then that would be understandable, but this offense has ranked seventh, fifth and eighth with play action the last three years. Garrett has one of the best play-action quarterbacks in the league and yet he uses it 12.5 percent of the time.
We showed above offenses are using play action on second down 21.4 percent of the time. The Cowboys have ranked 31st (12.0 percent in 2013), 32nd (8.9 percent in 2012) and 25th (14.9 percent) in second down play-action rate. Garrett doesn't seem to think play action on second down is feasible.
One hypothesis would be that in Garrett's first full year (2011) he was getting Romo back from a broken collarbone, so maybe there was an injury concern, but that's disproven by 2008-10 when Garrett was the offensive coordinator. Even then the Cowboys were only using play action on 14.3 percent of dropbacks. He just doesn't use it much, even when the offense ran effectively like last year when DeMarco Murray
led the league in rushing DVOA."