According to VGChartz...
Wii U:
April: 116,000
May: 221,000
June: 352,000
Total: 690,000
XBOX ONE:
April: 212,000
May: 172,000
June: 320,000
TOTAL: 705,000
http://www.vgchartz.com/tools/hw_yoy.php?reg=Global&start_year=2011&end_year=2014&console=WiiU
http://www.vgchartz.com/tools/hw_yoy.php?reg=Global&start_year=2011&end_year=2014&console=XOne
XBOX ONE win by 15,000... according to VGChartz...
According to NPD:
XBOX ONE is overestimated by 42,000 in USA, Wii U is overestimated by 7,000.
Update with this number:
Wii U: 683,000
XBOX ONE: 663,000
With update on NPD, Wii U outsell XBOX ONE by 20,000 globally...
We not have the Europe numbers, but i'll not be surprised if XBOX ONE it i'll be much overestimated even in Europe...
For the Japan, Media Create and Famitsu confirmed the Wii U sales.
Conclusion:
Wii U outsell XBOX ONE this Q2...