Has an AFL game ever ended 75-52?
Exactly once. On June 27, 1953, Fitzroy beat St Kilda 75-52, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 75-52 in league history.
That makes 75-52 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 76-52 has happened 2 times and 75-53 has happened 5 times.