An Actual PS2 looks like trash on even a good standard TV, much less a high-def one. There is also no uniform way of enabling 480p for the games that do support it on the PS2... some will have it as an option in a menu (which it'll never save), and others will have esoteric boot-up button combinations you have to press to even get the ability to enable it at all (I'm looking at you, RE 4). GameCube was pretty simple, and the Xbox 1 did it automatically... PS2 games simply look like ass on an actual PS2. Even when comparing side by side using the same cables, playing PS2 games on a PS3 just looks better. And with multiman to help override scaling options for input-latency sensitive games, there is little reason not to play them on a PS3 if you can.