They are, that was my point. They allude to things they themselves have done before. The development teams have their own little traditions they follow when making a game. The games evolve slowly over time, rather than changing greatly in a single sequel. Megaman X is another good example; in every single game, the first boss is absolutely huge, but goes down like a house of cards.
Japan and progressiveness are rather funny. It's not that Japan isn't progressing, it's just that they're progressing slowly. Japan is currently marching to the beat of its own drum. They always have. Progress seems to come in fits and spurts for them, rather than a steady stream. Things will change, they just take time.