The jokes were very, very low-brow, as in "Isn't Toronto boring? Who wants to go to Toronto? Am I right people?" and they were rolling on the floors not because they know this to be true based on their experience, but because it fits their stereotypes, which are based on ignorance.
I wouldn't say it's neutral either. But we were talking about how the general rivalry between the two cities would fuel the more specific rivalry between TFC and the Impact, and I and other ex-montrealers believe the perceived animosity they have toward us is overblown. That said, I never did any scientific study on the subject and all this is just my opinion.
This is off-topic but it brings up something I wish I had thought about on Friday night so I could have heckeled that idiotic comedian. There are litterally tens of thousands of ex-Montrealers now living in Toronto, but in all my time living over there I never once met a former Torontonian who had moved permanently to Montreal (McGill students don't count since they usually get the hell out of there as soon as they get their degree). Must tell you something about which city is the better place to live.