I already read your comment from Football Outsiders, would love to read their data set. If that was true every team would be play action all the time, it isn't as if teams dont use analytics. It is like fans that say all we have to do is run, run run and we win 97% of the time when we run for over 180 yards. The purpose of the play action is to sell the run, you wont get defenders to go for your run play fake if you cant run.