Well the only game I've really played in Wii is Super Smash Brothers Brawl as well, so let's rate that
Overall, it's was a really great game. I've never been too influenced by any of the Mario franchise games (they were still fun, of course) but this game really got me interested. I have no idea what the differences are between the original and brawl, but I had a great time playing it. Though it got a bit of getting used to (with my friends not showing any mercy at all), once I got adapted to the gameplay this game really stands out.
If you're gonna start on this game, I recommend you get someone to teach you how to play slowly. There are plenty of useful tips that newbies should know, including how to get back into the stage (I have yet to master that) and the usefulness of grabs. If you start off just playing your pro friend who shows no mercy, then this game will turn out to be 'horribly stupid' (was how I thought of this game @ first).
There are really nice extras in the game, plenty of 'trophy's to unlock which adds to the longevity of the game, and of course
The hilarious in-game Snake transmission conversations
Definitely a game to try on the Wii.
Just for those who're wondering, I use Mario, Ganonorf and Ike. Still learning the basics though =P
["Here is wisdom. Let him that hath understanding count the number of the beast:
for it is the number of a man; and his number is Six hundred threescore and six."]
--Book of Revelation 13:18