I did flight YYZ-BOG as part of a *RTW trip last week. Flight was full, so this route probably could be profitable for AC. But, the AC crew was not so kind. They are not the best * crew, but the service was worse than usual.

I guess AC should have an "equally" bad service for all the routes!
P.S. YYZ immigration reminded me NRT: SLOW!!!
P.S.2 Canada is nicer than USA