Heres some figures I found from
http://www.cubed3.com that show how all console have fared over in Japan. As you can see the poor X-box did not do too well. Its all Sony and Nintendo.
Hardware - This Week | Last Week | 2005 Sales | 2002-2005 Total Units Sold
1.) Nintendo DS - 299,328 | 176,958 | 2,754,777 [ 4,250,373 ]
2.) PSP - 86,403 | 92,121 | 1,832,848 [ 2,315,200 ]
3.) PlayStation 2 - 45,893 | 32,042 | 1,737,383 [ 11,142,589 ]
4.) Xbox360 - 43,970 | NEW | 43,970 [ 43,970 ]
5.) GameCube - 12,212 | 6,494 | 206,106 [ 3,089,246 ]
6.) Game Boy Advance SP - 10,456 | 6,797 | 625,402 [ 5,620,455 ]
7.) Game Boy micro - 8,326 | 7,911 | 362,250 [ 362,250 ]
8.) Game Boy Advance - 396 | 386 | 23,411 [ 4,551,789 ]
9.) Xbox - 164 | 149 | 11,572 [ 472,007 ]