Perth Glory drew an average of 14,979 fans to their home games in the 1997-98 NSL season.
https://en.m.wikipedia.org/wiki/1997–98_Perth_Glory_SC_season
Guess what the Perth Reds drew to their home games in 1997?
8,776.
Rugby League Tables - NRL Stats & Tables
afltables.com
The Reds' best season -- 13,390 in 1995 -- was still below the Glory's average in 97-98.
What's stupid is you thinking rugby league will be more popular than soccer at the professional level in Perth. History proves you're wrong.