Yes!, very likely.
Did you sell your slim?, Thug!!!, how could you!, I you probably sell my DS before my PSP err... wait, did I just said that or did I posted it too?
Well, not so much, the biggest limitation is sound, voice acting really. Since all textures are low res to fit on the 32 ram the PSP has.
Be positive, it'll be alright.
Too bad to hear about your PSP, I hope you can save to buy another one =)
Anyway, this game looks gorgeous. I can't wait to get it! The best thing is though is that it takes place in between 1 and 2, so those who haven't completed 2 yet can still get to play it.