>Not that there was ever any doubt who Dashie would side with in the end, of course.
But actually, my best guess going in was that Rainbow Dash would ultimately choose her friends, and then Fluttershy and Bulk would tell her that they were out there competing for her sake, so if she found a team she preferred, of course she should fly with them!
Really, it makes no sense to have a joke team of below average non-athletes competing in the Olympics, just because one world-class athlete can narrowly carry them. Rainbow Dash belongs on a team with genuine competitors. Friendship doesn't mean you have to be mediocre. Would her friends refuse to cheer for her if she flew with a different team?!