You go out of your way, repeatedly, in every single thread that talks about Canadian schools, to mention how easy they are to get into. It's getting very sad, actually, seeing your name as the first to pop up in arguments.
I'm an American living and studying in Canada. If you haven't studied here, at Toronto since I can't speak for the rest, you don't know what you're talking about. Getting A's in Duke was a freaking joke compared to getting the "80" that you mention over and over and over again. I handed in crap work and got A's back then, thanks to ridiculous grade inflation. They drop your worst year here, and you get to sleep through class and pass with flying colors in the States. And Duke was supposed to be in the top 6, and yet high school was more challenging.
I know few actual dentists this eager to go out of their way to annoy. You must be very bored. Recession must have hit you a while ago.