It's a good read. Scroll to spot 21 for PSP Vita.
Things are looking pretty grim for PSP Vita when a site like Toms Hardware is making jokes about it. I think that Sony needs to do something drastic to save this puppy from dying early. Opening it up to Android would probably do the trick...
http://www.tomshardware.com/picturestory/611-console-handheld-fail.html
Specifications
CPU: Quad-core ARM Cortex-A9
RAM: 512 MB
VRAM: 128 MB
GPU: PowerVR SGX543MP4+
Games: PS Vita Card, 4 GB to 32 GB
Consoles sold
Too few for Google to port Android
Year production ended
Soon, we bet (perhaps before Apple Maps is considered accurate?)
Reasons for failure
Alright, so we're trolling a bit. But there's a kernel of truth to our jest. The PS Vita has some serious advantages. But, for the moment, its sales figures are disastrous, totaling 2.2 million units worldwide as of June 30. Meanwhile, the Nintendo 3DS has sold more than 22 million units. These disappointing results call Sony’s economic model into question at a time when games on mobile devices are strongly appealing to mainstream gamers.