How..do you do spriting in HD? I asked myself the same question with HD anime..I just don't understand, lol.
Same way you do them in SD, but with more pixels. once upon a time 480p was quite High Definition too, after all games were 240i (all PSone 2D games are 320x240 for instance) it's the same kind of upgrade.
Also, I heard Sony and Bamco (Bandai-Namco) had a falling out, and that's why PS3 isn't getting Vesperia.
they didn't, PS3 most likely will get it afterwards like happened with eternal sonata, Microsoft just moneyhatted a time exclusivity deal, the usual.