I'm afraid I don't understand these types of purchases, aside from trophy-whoring.
If you have a backwards-compatible PS3 (or a PS3 and PS2; that would probably be cheaper), why not just go to a used game store and buy both trilogies for a total of ~$15? It's the same as the Wii's ports of Resident Evil Remake and Zero. There was absolutely no difference in the titles from the cheaper Gamecube versions, which also played on the console, yet they sold anyway.
Consumer trends flabbergast me.