I think it's probably if you go to a top 10 school, you know of the other top 10 schools for your program. As a CompSci undergrad at Georgia Tech I knew of UT, etc. Even if you don't go there for undergrad, there's still a possibility of going there for post-grad and people talk.
Sorry to hear about the response. Hopefully I didn't come off as being negative. I thought maybe I was learning something as well. Different people have different experiences. I myself don't know much about Canada except that it appears to be a beautiful place I want to visit some day.