The answer is simple:
If the scores are level then they play extra time (5 mins each way). A field goal or penalty goal doesn't end the game. If they score a try they win. Then whoever is in front at the end of the extra time period wins or if they are still level it is called a draw.
The winner gets 2 points (1 for the draw and a bonus point for the extra time victory) the loser gets a point for the draw only.
Draws in the regular season, 10 minutes each way in Origin and finals, followed by Golden Point if still level.
Draws suck, bring on Golden Try.
Played in 2.5 minute quarters.10 minutes extra time and teams reduced to 11 aside.