Super Mario Galaxy 2D trailer makes me want my money back

...as far as the New Super Mario Bros. goes. Don't get me wrong, the mentioned title is is no way a bad game. However, I am not sure if it can stand up to the level of playfulness and imagination encompassed within the trailer below. Some folks I know prefer NSMB to Galaxy but I can´t shed this feeling of something being wrong in NSMB. Maybe the short load times you have to endure every time you die? (The DS version does not have this.) Or is it the number of wacky disguises I can't seem to employ properly? Is it me hating the water levels so badly? OR is it because I don't have a skilled enough partner for the multi-player?

Whatever the reason, NSMB Wii didn't make me re-discover the splendid world of Mario Adventures.