Has an AFL game ever ended 120-73?
Exactly once. On May 10, 1941, Carlton beat Hawthorn 120-73, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 120-73 in league history.
That makes 120-73 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 121-73 has happened never and 120-74 has happened 2 times.