>>12363407That's in response to moves its opponent uses, yes. But they've stated that the 'bond' you share is important in X and Y, and they introduced Sylveon at the same time. Maybe it's something like its type changes to match the opponent? They introduced it to a fighting pokemon and it got wrecked. Then, it did well against ice. But then it was weak to poison. If they show it to be weak to psychic or something, it would be consistent with this theory.