Hell no, the Wii Remote is perfect for New Super Mario Bros. but just take a look at the GameCube controller and tell me how you would play. An analog stick for a 2D Mario just wouldn't cut it..
Besides the GameCube had a different target audience to the Wii and a 2D Mario would probably have just made the image of the console worse (kiddy, 2D games = underpowered etc)







