As some may know, FFXIII was originally intended to be released for the PS2. Once SE saw what the PS3 (and eventually 360) was capable of, they changed their minds.
However, scans from the recently released FFXIII Ultimania are being leaked, and this is what FFXIII would've looked like had it been released for PS2:
This is what Final Fantasy XIII Looked Like on PS2 - Final Fantasy XIII: News, Trailers & Screens ~ Final Fantasy-XIII.net
Yes, I realize it uses Yuna and Rikku, but that was the early test footage. Pretty interesting. I thought FFX-2 and FFXII's graphics were pretty cutting edge anyway for PS2, so I don't think it would've been all that bad. Still, its nice to know we're getting this game in HD.