Cooper Rush, the Dallas Cowboys’ literal passing sensation broke beyond the standards and paradigms of backup quarterbacks in the the team’s third victory in a row. Staubach, White, Aikman, Romo, Prescott. They’ve got nothing on Cooper Rush. That’s how things stand after each man’s respective first four games at the helm of the storied Dallas Cowboys offense: of that group of five and beyond, Rush is the only one to emerge with a clean mark on the other side, clinching such a feat with a 25-10 over the Washington Commanders on Sunday afternoon after the streak began with a prime…