Former Football Fern Ella Wiebe continued her golden touch with a hat-trick, with the rest shared between Rose Lockett, Jordy Kahl, Grace Alifi and Vanya Hodgkinson.
Wanganui Athletic now must be clear favourites for the Top 4 competition against North End, Palmerston North Marist and Massey.
Downes has used a core group of eight players for the year, backed by around another seven younger ones and players from the Athletic second team.
Athletic now have a home run of three games - starting with Marist then Massey in the Manawatu league, before they play PN Marist again in the important Federation Cup semifinal.
Despite having proved themselves against all the Manawatu teams, and with the second Marist game having more riding on it, Downes said there was no need to consider experimentation. "It's more about consistency and getting the team to play well."