Has an AFL game ever ended 70-27?
Exactly once. On July 29, 1905, Essendon beat St Kilda 70-27, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 70-27 in league history.
That makes 70-27 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 71-27 has happened never and 70-28 has happened never.