To the disappointment of most of the remaining Nintendo fans, there's no online functionality found in NSMB Wii. A feature that should be standard in today's games, leaving it out can only be explained by ridiculous laziness
Ridiculous statement. Most people, me included, don't give a dime about online play in a Jump&Run.
with simple, fun gameplay
The controls of NSMB might be simple to learn but difficult to master. Look at other Holiday games like Modern Warfare 2, that game is simple as hell, the single player is like a rail shooter!
And for the unsubstantiated statement that Nintendo leaving the Core alone, look at 2010: Mario Galaxy 2, Metroid Other M, Dynamic Slash, Endless Ocean 2, Sin & Punishment 2, Cosmic Walker, Monado: The Beginning of a New World etc. etc.