Why is so hard for Wii U sell 20,000,000?

[Soundwave]

 

Courtesy of NeoGaf ... Wii U remains waaaaaaaaaay behind the GameCube's LTD when looking at US numbers 

 

The gap is growing bigger every month too, it's not shrinking. Had the Dreamcast not been discontinued basically, I think it's quite possible the Dreamcast even would've outsold the Wii U in the US.