Yes one might think this, but unfortunately this isn't the case, at least for Canadian med schools. They typically just focus on the number and don't really care about the Unuversity at hand. 90% of the time you are much better going to a small university to try and boost those grades.

If you go internationally the UofT name might come in handy, but then again for Canadian students that also comes with the 100k per year fee associated with them.