Auron got screwed big time by Sephiroth's SFF in 2k8. Compare R2 with R3:
http://www.gamefaqs.com/poll/index.html?poll=3290 (Auron beats Sonic with ease)
http://www.gamefaqs.com/poll/index.html?poll=3299 (Sephiroth arrives and suddenly Sonic is 62/38ing Auron)
I'd suggest FFVII can still SFF very heavily in 4-ways, just not in 1v1s. We've seen this with other franchises, where when it's just the core base voting, the splits are very pronounced.
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Praise the Black Turtle, Game of the Decade Guru Champ.
(Well, I never promised creativity, did I?!)