Defining a generation by "bits" is hilarious, you're still falling for outdated 1990's marketing. 8 bit! 16 bit! 128 bit!
The bit rate of CPU architecture is not as important visually as other factors of the system, such as the Mhz of the CPU, what the CPU is designed for, the GPU, and so on.
For example, TurboGrafx-16 had comparable graphics to SNES and Genesis, but was using 8-bit CPU architecture. It didn't make a difference. It's still classified as 4th gen.
Combined sales of 35 million units plus all the pc's being sold in stores now that feature dual processors would lead one to think that seventh gen consoles are selling well.
35 million units after 3 years is not a successful generation. Without Wii, the 7th generation is looking to be a dissapointment. But Paul wants to include ALL 757 million PC'S SOLD in the last 3 years as consoles. Why don't you edit that into Wikipedia, see how it goes.
http://en.wikipedia.org/wiki/History_of_video_game_consoles_(seventh_generation)
Why is it such a big deal if the Wii is a sixth or seventh gen console anyway?
And there you have it, you stumbled on the point of the thread. "generation" is a made up word for Video Game Historians, and it has no impact on sales or trends or gaming in any way.
Put Wii in whatever generation you want. 6th gen, 7th gen, new gen, it doesn't matter. It's dominating wherever you put it.