I am assuming that it means equivalent to Tsinghua University in China in terms of reputation and quality. Regardless, it is a good school, however I think there are other Canadian schools that have better international reputation.
I am not trying to start a dispute, but simply helping the original poster to make a decision regarding pursuing MBA in Canada.
Hmm - Not sure where you got the information from. When I was there, if you want to do engineering, Waterloo is the place to be. If you want to arts and sciences, then UofT, Queens, and McGilll are great schools. Carleton is a good local school in Ottawa. Unfortunately it does not have much international presence.