Maybe the home side is better. There's no rule to say things have to be 50/50. Bulldogs played the same number of gamesExcept we've just been told that in the past 20 years the home side wins 62% of the time in this competition.
Not 50/50.
We then observe that no non-Victorian side has defeated a Victorian side in the grand final without list or salary cap concessions. So we have a growing body of evidence that the disparity could be even greater.
at the G as Swans in 2016 but you are counting that as a home win? One of, if not the most factually incorrect OPs I have seen.