Really? Okami was polished? How about feeding animals, the fact that you had to go to a loading screen to see a cutscene, and then a loading screen to get back to the game. Or how the game was padded with collectathons (find the dogs! find/roll the big bead things!). Or the minigames you were forced to do again and again. Or the inability to skip cutscenes.
I mean, this is ignoring the standard bad and frequent load times between any area, the subpar-to-decent level design for most of the game, the inability to turn the hint system off (not that you'd need it), the stupid fight system that closed you off from the rest of the world, the stupid leveling system which didn't really mean much outside of combat, and the more obvious padding stuff like the repeat boss fights (which, in Orochi's case, was objectively bad game design).
And that's not to say the overall package was bad. I mean, it held my attention for 36 hours, but the first third was plain ol' drudgery, and it was a slow improvement from then on until the (mostly) great finale. But man, it had problems.
Oh! While I have your attention, I want you to heed this plea: Do not buy Donkey Kong Country Returns. Don't do it. Please, for the love of god. Never ever play it for the rest of your life.