Wed Aug 10, 2011 1:19 pm by ThatOtherPerson
Will it get PS2 games as officially made ports? Absolutely. It has everything you really need in terms of input mechanisms and it is significantly more powerful then PS2 was. I fully expect there will be ports and they will probably even be better then their originals.
But using a homebrew emulator (once homebrew becomes possible)? Nope. It might be plausible for someone to try and make or port a PS2 emulator for Vita but I still don't expect many if any commercial PS2 games will run at full speed or even at a tolerable frame rate in emulation on a Vita. It would be more of a tech demo then something that you could actually play games with.