Generally there is a single mode 1 data track. Some Saturn CDs have a second, mode 2, data track in addition to the mode 1 track (e.g. Worldwide Soccer 97).
The subchannel data isn't important.
Cooked images are fine for Saturn games. If you intend to distribute bin/cue images, however, I believe you should stick to raw reads (some writers have difficulty with mixed-mode discs in cooked mode).
heh thats funny cause my moldy oldie thats max burn is 2x can crank out iso/mp3 just as well as bin/cue. but just goes to show you quality is not like it used to be. buy plextor or mitsumi. great drives.