What is a realistic best case scenario for the Wii/PS3/360?

[ckmlb]

Well I put these in TheSource's thread but I will put them here too, by the end of 2011 (more sales in 2012 and 2013) which is basically the bulk of this gen sales I think:

Wii: 90-100 million

360: 50-60 million

PS3: 60-70 million