Let's make the assumption you can earn 25,000 AA miles on your *wood Mastercard annually, and another 15,000 AA miles through flying. That's 40,000 AA miles. It'll take you 25 years to achieve Lifetime Gold. That's not exactly something I would plan on, with how these programs change, devalue, or whatever else. Nobody said that the Million Mile privilege will continue to be all miles earned, and even if they did, I wouldn't believe them for the 25 year duration it'll take.

AA is a more generous program overall, imho, but it's tougher to earn to it while in Canada.