Has an AFL game ever ended 126-70?
Exactly once. On July 25, 2004, Melbourne beat Richmond 126-70, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 126-70 in league history.
That makes 126-70 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 127-70 has happened 3 times and 126-71 has happened 3 times.