The dig against the Wii is that it's pretty much a GameCube. With a new controller. But, so what? In a recent interview, Nintendo's Shigeru Miyamoto confirms that:
The hardware is basically a GC. We've upgraded our development tools to new versions but, you can still use GC programs as they are. With that in mind, I thought we could remake GC titles for the Wii and modify them to work with the Wii remote so that they're more fun to play.
Not only that, Miyamoto thinks Wii-makes won't command full price as its easy to find the original GameCube titles second hand. Though, fret not, Miyamoto notes that the Wii does have better graphic capabilities than the GameCube, and there will be eye candy games for the Wii. So, it's the GameCube, but better. What's wrong with that?