I find some of them quite entertaining ...
Many of the analysts have the Wii selling by 2011/2012 what it will have sold by the end of 2007 (or mid 2008); at the same time they have numbers for the PS3 for the end of 2008 which it would be lucky to achieve by the end of 2011/2012 at the current rate of sales.
I understand their mistake though ...
They made their decision based on brand value and market research using assumptions like a $300 PS3; as we all know "brand value" is meaningless unless a company continues to deliver the appropriate product, market research was worthless because no one knew what the Wii (revolution) really was about, and the PS3 ended up being one of the most expensive consoles ever sold.
Edit: Even I initially thought the Wii would be popular but didn't think it could unseat the PS3; I expected it to pass the sales of the N64 as it claimed a unique position within the market which the PS3 and XBox 360 could not challenge.
