Iwata said that he expected 9 million Wii U consoles to be sold this fiscal year.
To date they're sold 500,000.
When given a chance to change his estimate he said he stands behind the 9 million mark.
This mans that Nintendo must sell 8.5 million Wii U consoles in 5 months.
Selling that many consoles is impossible and puts Nintendo in a very bad place going forward. Not only is there competition in the last and next generation consoles but there's also the fact that Nintendo hasn't done a good enough job of letting people know what the Wii U is.
This isn't like a sports team saying they're going to win a game despite incredible odds, this is a business and when you fail to meet projections the faith in the company falters and you end up losing supporters and your stocks fall.