As I recall "Bell Media" (or at the time CTVGlobemedia) did buy rights to the World Juniors and curling's Season of Champions. They use that name when they are buying TV (English and French), online etc. It has been used before with events that see no coverage on CTV. For Skate Canada, CTV showed 4 hours of coverage. TSN and TSN2 had over double that apiece, I believe.
The 2015, 2018 and 2022 finals will (probably in the case of 2015) have to be on CTV. Everything else can air on TSN/TSN2. I could see a Canada game at the 2015 World Cup airing on CTV as well. It may depend on what conflicts TSN has (ex. US Open golf, Formula 1, Wimbledon in June).