I think it's the highest praise you can heap on a Wii game, at least in terms of its appearance, when you can say it doesn't look like a Wii game.
Instead, with all those colours, explosions and (most important of all) clever camera placement, Team Ninja's debut Metroid effort looks closer to something you'd download over Xbox Live Arcade than something that would sit on a shelf in a white box.
If only more developers could push the hardware like this!