Originally Posted by
jerrys
2. With RBC Platinum Avion I get X1 miles only but can then convert to British Airways witha 2 for 1 promotion.
2 for 1?

RBC often, well at least twice a year let's say, has a 50% bonus transfer but AFAIK that's as good as it gets, definately not a double bonus.
BTW, Blonde Bomber's CC comparison is here:
http://www.flyertalk.com/forum/showthread.php?t=361242