Then brag about the things worth bragging about. How often does something ridiculous become something awesome? Never, because it was born a loser and so it'll always be a loser. That applies to Magicarp, too; it won't become awesome because of you, it'd naturally become a Gyarados whether you were its trainer or not.

We're only one of the best tennis teams on the middle school circuit, but I guess I shouldn't expect someone like you to be aware of those better than them.