There is a difference, the PS2 dvd reader is pretty crappy compared to one you buy, they put a pretty low quality reader in there for some reason. If you dont believe me go rent 2 DVDs from blockbuster, try playing em on your PS2, notice the parts that skip and crap? Thats not the dvd its the ps2, put it in your DVD player, works perfect. I dont know bout the Xbox dvd player, I hear its pretty good, but I like the games a lot more on the PS2. I have actually had dvds not read at all on my ps2, like the very last 2 chapters of the Cell, damn I was pissed.