The site appears to be a Sega Saturn fansite, so obviously they have a slight bent towards playing it on the Saturn.
But for anyone else who's interested in trying the game, the PS1 version was fine, and is more readily available on modern consoles.
For modern options, miSTer's saturn core is known to be very accurate.
They really didn't cover at all why this game is better specifically on Saturn than PS1 or any modern remake / emulator.