Originally Posted by
Gardyloo
Fair enough; however the kicker with Avios is the cumulative "cost" of connecting trips. If it's YUL-JFK, you're right, it's 4500 Avios or 12,500 AA miles. If it's YUL-xJFK-LAX, it's 4500 + 12,500 (17,000) Avios vs. the same 12,500 AA. Connecting really adds up.
Which is one of several reasons why I use AA over BA. But YULantonym is primarily a *A flyer who just wants to book the occasional YUL-JFK with his spare OW miles, so for him I think BA is a much better program.