Has an AFL game ever ended 52-11?
Exactly once. On June 30, 1900, Sydney beat St Kilda 52-11, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 52-11 in league history.
That makes 52-11 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 53-11 has happened never and 52-12 has happened never.