I'm not sure how one would define "Canadian Exceptionalism", but the phrase "American Exceptionalism" always made me kinda chuckle.

Sure the U.S. is the land of opportunity and freedom. But they've been THE world power because they're the first-world country with the largest population. I mean, people forget that right now they're the third most populous country in the world overall, and miles ahead of other first-world countries.  It's simple math, not exceptionalism. And the crazy thing is, they have such a large population due to immigration!