The original game looks beautiful in its original resolution on the PS2.
That's not to say that the up-scaled version is ugly or anything, far from it, I simply find the original to be fine. And I do have a Vita without anything grand to play, so this is a must buy for me.
Not to bring up ancient console history again but Nintendo didn't defeat Sega in the 90's..in fact the Sega Saturn mopped the floor(sales-wise) with the N64 in Japan(the world's largest game market back then). Ultimately, Sony defeated Sega with its DVD-equipped PS2.
BradBurns' comments