My prediction:
Hm, total numers eh? We all know 360 is going to sell bad in Japan. At most, I think that 360 will sell as much as PS3 in US. Perhaps more in EU. But less in Japan. The Japanese (/Asian) market is smaller (between 25 and 30% of total)....
I think Xbox360 will sell less than PS3.
Nintendo will still be in 3rd place, but not with such a big difference.
Or it could be possible that Revolution is so great and so cheap, that it will be in 1st place, because everybody will want one.
5 million is a pathetic number.
I will probably feel stupid when re-reading this in 3 years.