In the night games most SANFL-WAFL teams beat the VFA teams. Don’t think the VfL Reserves would have had much chance either…The VFL was the top tier league that the best players from around the country joined to play against the best. The SANFL and WAFL were third-tier leagues (behind VFL reserves and probably VFA)
The teams were made up of some good young players not yet ready to move to Victoria, locals who weren't up to the top level, and old legends who never had the guts to challenge themselves in the VFL for fear of getting found out, so preferred to stay in a small pond where they could pretend that they would have been great.
Victorians had no interest in those leagues.