smbu2000 on 31 August 2008
For SMB2 it's probably because the game wasn't even a Mario game in Japan. It's original name was Yume Kojo: Doki Doki Panic and it didn't have the Mario characters. http://en.wikipedia.org/wiki/Yume_K%C5%8Dj%C5%8D:_Doki_Doki_Panic
Pretty much the only thing that was changed when it was brought to the US was the main characters.
http://jp.youtube.com/watch?v=21M1AQq1HRs
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Me since the games were revealed, the fanboys since E3." 
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