I feel that the platforms should be in separate categories:

1. Arcade
2. Sega Saturn / Xbox
3. PlayStation

Each of the three differ between their movesets, character selection, and game modes, with the Sega Saturn and PlayStation versions being the most different. Additionally, the PlayStation version with the added characters requires more matches to complete than the original Sega Saturn version, especially if Ayane has been unlocked. I'd even go as far as to split the PlayStation runs up further to Ayane being unlocked or not, but could just be categorical variants. The Xbox version could remain as a Saturn Emu version, but it's obviously the better option of the two due to the load time differences.