ARLINGTON, Texas — In the end, final score is all that matters to the Dallas Cowboys. Down 23-20 with 3 minutes, 20 seconds to go, quarterback Dak Prescott engineered a 98-yard game-winning drive, capped by a 2-yard run from Ezekiel to give the Cowboys a 27-24 victory over the Houston Texans at AT&T Stadium. It was not supposed to be this hard for a Cowboys team who were favored by 17 1/2 points against the Texans, the largest point spread this season in the NFL. The Cowboys, who gifted the Texans three turnovers, including two Prescott interceptions, certainly didn’t cover the spread. But the…