Has an AFL game ever ended 78-78?
It has. 78-78 has been a AFL final 4 times in 16,622 games. The first was Essendon and Melbourne drew on May 7, 1921; the latest was Port Adelaide and Geelong drew on May 13, 2000.
That makes 78-78 the 947th most common final score out of 6,607 that have ever occurred in AFL. One point away, 79-78 has happened 10 times and 78-79 has happened never. At one point the score disappeared for 35 years, between 1921 and 1956.