May I ask who told you or where you read that load of crap? X360 originals aren't burned, they're pressed, not to mention that the console's drive doesn't care about the speed the disc was burned at. What it does care about the burn quality, i.e. readability of the disc, and with newer burners the slowest burn speed doesn't always result in the best burn quality since newer burners are better tuned for faster burns.