EAST RUTHERFORD, N.J. — If the surging New York Giants were to have any chance of becoming the first NFL team to play a Super Bowl in its home stadium when the Big Game is held here in two months, they knew this was a game they had to have.Trailing by 15 points midway through the third quarter and playing lifelessly, it seemed the Giants were doomed.But the Dallas Cowboys let a reeling team get off the mat as Eli Manning brought the Giants back to life with a pair of touchdown passes.But Manning never saw the ball again.Tony Romo and the offense answered the call. Three times Romo converted third downs — twice to Dez Bryant — running the clock down to four seconds before Dan Bailey’s 35-yard field goal gave the Cowboys a 24-21 victory.Playing under blustery conditions, Manning found it difficult to maintain a rhythm, throwing for just 95 yards in the first half while the Cowboys built a 14-6 lead. Not until the margin had ballooned to 21-6 on Romo’s second touchdown pass of the day to Jason Witten did Manning find his groove.Manning drove New York 67 yards in six plays to make it a one-score game. Brandon Myers’ 27-yard TD catch finished it off when two Cowboys watched Myers get off the ground after the catch and run into the end zone to cut it to 21-13.Then Manning finished a 58-yard drive by throwing a pass to Louis Murphy in the corner of the end zone from the Dallas 4. Andre Brown’s run for the 2-point conversion tied the game at 21-21.Two years ago, the NFC East was decided in the same stadium between these same two teams.So why couldn’t it happen again?Romo, Bryant and the rest made sure it didn’t.As a result, this 2013 Giants fairy-tale comeback of a season from an 0-6 start likely won’t have a happy ending.