I believe you can transfer to more carriers than we can. Only choice here is DL or CO. Also, the credits used towards the purchase of an airline ticket are lower in Canada. You might also want to consider factoring in the relative values of the dollar. Cdn Amex Rewards points are actually worth 50% more than US ones, since we get 1 point for every C$1, and those can be transferred into 1 mile in either of the two respective FF programs.