I can see the comparisons saying 3 and YI are better, but NSMBU? Dafuq?
It's been explained a number of times why, mostly related to the actual level design.
Instead of saying "dafuq," explain why you think they're wrong.
The level design in NSMBU is phenomenal. Yes, the art style is old and comes off as a bit lazy, as does the music. But the game itself is fantastic.