It's hard to know how much the Gameboy Color sold, but before Nintendo gave the official combined total of 118 million for both the GB and GBC, I had heard ratio was 7:5.* So if that's true, then the GBC sold about 49 million units in less than four years (Oct 1998 to sometime in 2002).
Can the PSP outsell that, even if it's an unofficial number? I say it can.
Sure it will take longer than the GBC (unless it can sell 15 million units by December), but somtime in early 2010 or sooner, if there is a sales boost.
When that happens, I swear the PSP will be freaking Rocky. It will be a huge accomplishment to outsell a major Gameboy system. Sure it didn't take down Nintendo, as many predicted, but it stayed on its feet, even when it looked as though it would just fade away. Now that it has a second wind thanks to the Slim, 50 million sales in the next two years is almost assured.
Let's hope Sony sticks this out, and sees it to the end.
Go PSP!
NOTE: I admit I don't own a PSP, but I want to see it succeed, and if Namco localized the port of Tales of Eternia, and S-E localizes the Star Ocean remakes, it will certainly be on my wish list.
* The ratio makes sense to me, since the GBA had to be delayed until GBC sales slowed down so Nintendo could use the GBC processors for the GBA's backwards compatibility.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs