it's not FLAC it's transcoded to my eyes what's why I asked him by mail
Actually, the spectrals mostly match an MP3 game rip that's been posted on youtube. Can't say if that's the full quality you can get off the console, but he did do some light editing on it. Also can't say if he just straight up stole the rip or not; he may have just used it as a base and performed his own. If that's the maximum quality you can get from the cart then that'd be why it matches so much. Curiously, the usf rips have even lower quality, which is odd since they're supposed to capture the audio "exactly".
See
Thread 216447 for more info