Japan (95 weeks)
Wii: 6.8 million
PS2: 6.8 million
PS3: 2.3 milion
http://vgchartz.com/hwlaunch.php?cons1=Wii®1=Japan&cons2=PS2®2=Japan&cons3=PS3®3=Japan&weeks=95
Americas (95 Weeks)
Wii: 14.2 million
PS2: 11.6 million
PS3. 5.8 million
http://vgchartz.com/hwlaunch.php?cons1=Wii®1=America&cons2=PS2®2=America&cons3=PS3®3=America&weeks=95
PAL (78 Weeks)
Wii: 8.4 million
PS2: 7.3million
PS3: 6.2 million
http://vgchartz.com/hwlaunch.php?cons1=Wii®1=Europe&cons2=PS2®2=Europe&cons3=PS3®3=Europe&weeks=78
Wii, PS2, and PS3 numbers after the same amount of time on the market for each region. Any questions?