From now on, you can play the same person twice in each platform, meaning if you own JO and JA you can play 2 JO games and 2 JA games with the same opponent etc. In theory, you could get 14 CFs from the same person this way, yes, but you'd both need to own all the games and be good at it, too.

Oh yeah, this is also a reminder that SWGB and FC are on the list of games to be played still, under "GB" and "FC" when signing up.