The funny thing about sports is that the playoffs will either turn fans into rabid megafans, or completely turn them off. But the truth is, you'll probably never see any game played at a higher level than when the entire season is at stake.
That's how you get some dramatic, surprising results. You just can't predict 100% of the time who will win all the time.
Still, seeing most of America rooting for a team that isn't even based in America is an odd phenomenon.