Another thing that makes Canada different from the US, is our global image of tolerance. One example would be the Underground Railroad. Another example would be our approach to becoming our own nation (Didn't require to get all gun-ho about it) We don't invade other countries and fight based on principles, not personal gain (Afghanistan was already invaded by the US before we arrived to clean up) Heck even the US invaded Canada once apon a time, and although we pushed them back well beyond their borders and we captured more territory in the US at the time, we left and both sides agreed to the previous borders prior to the invasion.....
There are a few things similar between Canada and the US, mainly technology, media/entertainment, but government, historical backgrounds, medical, overall outlook on life (Being happy in general / being rich to be happy) and many other aspects when you put them into play, make both countries quite different. If anything, we're more similar to the UK or Australia then the US.
I just think too many people tend to compare the trivial things and forget the rest based on our accents.