Psh, I'd say it's beyond Galaxy quality. The visual and cinematic presentation has taken Nintendo games to a new level. It's masterfully deft, interweaving short, meaningful cutscenes in with game data presentation and interactive bits to break up the non-interactivity. It presents an effective, meaningful story without being ponderous, and provides solutions to common "failings" of Nintendo games, such as high quality Simlish speech. The audio presentation isn't as grand as Galaxy, recycling classic Pikmin tracks with new, however it's still good stuff.
And the gameplay is interweaved with the cinematics effectively, while still retaining the most important position, as it should be in a video game.
Granted, I haven't finished the game, however what I have seen is top notch stuff.
Unfortunately, I think Pikmin 3 is not going to get its due, being a "strategy" game, albeit with action elements. The market, not just consumers but reviewers as well, just does not embrace such games. Pikmin 1 and 2's sales, despite being some of the most original and well produced games of that generation, barely topped 1 million sales each.
Anyway, have to run to work.