Has an AFL game ever ended 128-77?
Exactly once. On May 17, 1975, Carlton beat Sydney 128-77, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 128-77 in league history.
That makes 128-77 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 129-77 has happened never and 128-78 has happened 3 times.