[quote name='Demontooth']DS sold 1,600,000
PSP sold 953,200[/QUOTE]
It's interesting that many people declare the PSP a failure and the DS a rousing success. The PSP sold a lil' over 60% of the DS in the month of December; to sell that fraction of a handheld that's considered to be steamrolling over everything else in sales is no small feat.
It also suggests to me that, if they implemented a serious price drop (to $150 or $130 for the core PSP), they could recoup some of the lost market share to the DS. I don't think they'll ever catch up, but they can sure shrink the gap.
Of course, that totally ignores longitudinal sales trends and overall sales, which probably tell a very different story than the month of December (being the holiday and all).
The game sales are interesting; perhaps all the Wii owners bought their copies of Twilight Princess in November, since the GC version of Zelda outsold the Wii version by 20K or so (for combined sales of over 1 million).
It's also interesting to see what the "new" blockbuster franchises are, since Guitar Hero and Gears of War, two titles that only exist on one system, are #4 and 5 (I think) on the NPD sales charts that combine all platforms and franchise sales (which explains why "Cars" games are so high).
EDIT:
http://biz.gamedaily.com/industry/feature/?id=14940
Sorry 'bout that. The charts are at the bottom of page 1.