I think it will look like this:
Wii: 16.8 Mill. (14-18 Mill)
Xbox 360: 16.3 Mill (15-17 Mill)
PS3: 9.2 Mill (7.5-11 Mill)
And that is also my estimate in game 16:
http://www.vgchartz.com/predictions/results.php?game=16
To bad someone destroied the average, by writing some stupid numbers... Only PS3 numbers seems about right.








