We have the same rule in the states but there are tons of drivers here that are idiots. If two cars pull up to the same intersection at the same time, the person in the biggest hurry will usually jump the gun and go first no matter what the law is. Thus, it is usually easier to just force one direction to stop while allowing the perpendicular street to continue without stopping. It also helps with assigning blame in the case of a collision.
N+ it’s such a good game and no one ever knows what I’m talking about.