I have to strongly have to disagree with you here, the leafs are not ahead of the jays in the sports section during the summer, at times, weeks go by , especially in august where you don't hear anything at all about the leafs until they start training camp. There's no doubt about it, the jays own the summer months, leafs are nowhere to be seen after the playoffs(which they never make). The only time you'll hear about the leafs is for a couple of days leading up to and during the draft, and after july 1st anytime they have a major free agent signing. The hockey people on the fan and tsn radio take two months off, some of these guy you only hear on draft day, and a free agent signing, other than that, then go silent until training camp opens.
Which fans don't know anything about the game? There's a very educated fanbase of old expo fans in montreal that still follow baseball, they have minor league baseball in ottawa and calgary, the baseball fans, know and follow the game, know the game. The only competition baseball has in the summer, would be msl soccer, and the one month every four years they have the world cup. The cfl is non-existent in the east.