Scottie is, essentially, correct.
If you look at the expceted Japan sales, they're somewhere around this
Wii: 17M (pessimistic is 15M, optimistic is 20M)
DS: 37M? (Has sold 26M so far, but is slowing down a lot).
PsP: 22M (has sold 11M so far)
Ps3: 6M (2.2M so far)
X360: 2M
Total: 74M
Compared to last gen, in which it was 45M. That's a 70% growth.
But that is, of course, because of handhelds. Handhelds have a GoG of somewhere around + 250%
(I'm not sure why I wrote that, most people should know it).
For consoles, there was around 30M sold last gen. I'm guessing for around 25M this gen (see numbers above). A slight drop, but that's not really too much to care about.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS
