Looks like Wii U will beat GameCube in Japan this year.

[BlowoverKing]

Where the hell are those numbers coming from?

First of all the Wii U is NOT up YoY (yet) according to both Media Create and Famitsu.

Media Create: 253,202 (2014) vs. 233,179 (2015)
Famitsu: 263,856 (2014) vs. 227,443 (2015)

 

Secondly Gamecube outsold the Wii U 2004 vs. 2014 (726,640 vs. 618,150 respectively) according to Media Create.

 

(source) http://www.neogaf.com/forum/showthread.php?t=30662

 

Besides, the Gamecube was DEAD in Japan by 2005 so outselling it isn't much of an accomplishment.