It was sweet revenge for Brantford who lost to Toronto in last year's three-game championship final.
The Leafs, who play home games out of Christie Pits, lost their four games, 14-4, 4-1, 8-3 and 9-3.
It capped a so-so 40th anniversary year for the Maple Leafs who finished the regular season in fifth place with a 17-19 record - their first sub-.500 finish since 1987.