Wilson dominated the women's final, defeating New Zealand's Debra White 9-3, 8-4, leaving White with her second silver medal in the competition.
England's Izzie White, 23, and Ireland's Shauna O'Neill – fresh from her 2023 World Bowls Junior Indoor Championship triumph – secured bronze medals.
O'Neill's national title win has already earned her a spot in next year's tournament.
Copeland outclassed Fiji's Rajnesh Prasad 7-2, 6-4 in the men's final.
Scotland's Iain McLean, the 2014 champion who qualified for next year's event through his national crown, and Canada's Owen Kirby rounded out the podium with bronze medals.
The platinum-ranked tournament, marking its 21st edition since launching at Moama, drew 57 competitors from 33 nations to the Riverdome complex's two nine-rink greens.
Players contested matches in a two seven-end sets format, with three-end tiebreaks if required.
This milestone event highlighted Oceania's strength, with three member nations reaching the finals.
Ireland stood out as the only country to secure multiple medals.
The Champion of Champions will return to cluBarham from October 6 to 11, 2026. Meanwhile, the venue prepares to host the World Bowls Series finals from December 9 to 12.
