Has an AFL game ever ended 72-39?
Exactly once. On September 20, 1924, Essendon beat Sydney 72-39, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 72-39 in league history.
That makes 72-39 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 73-39 has happened 2 times and 72-40 has happened 4 times.