Possibly, although without seeing the number of movements by airline it's difficult to fully assess who contributes to what. For instance, WS has a very small presence at YUL compared to AC. However, in the prairies and West Coast I suspect WS has a much bigger presence than AC. Perhaps Prairie airports have that clean cool aspen air that allows for better OTP compared to the urban centres of Canada

In any event, it's not like WS has OTP worthy of writing home about either. The whole situation sucks compared to even the States.

Safe Travels,

James