I agree with those who say it depends on your specific situation as to whether the Vita is worth it. For me personally, I am studying away from home without a television or a home console. I've always been a handheld gamer having clocked up countless hours on my Nintendo DS and before it the Gameboy Color. The last console I bought was a Nintendo Wii in 2008 in anticipation of SSBB. Four years on, with a little spare cash, I felt it was time I bought a new one and for the same reason - ALLSTARS!
If you ever have the chance to try All-Stars on the Vita and you haven't already, GO FOR IT! I have never been so impressed with a console before so soon after purchasing it and I haven't even got PSAS yet.
@ the OP, that screenshot isn't the best you could have gotten from Uncharted, though it does still look great.