Has an AFL game ever ended 114-31?
Exactly once. On June 22, 1897, Geelong beat St Kilda 114-31, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 114-31 in league history.
That makes 114-31 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 115-31 has happened never and 114-32 has happened never.