@Gilthanes: I see what you meant by "inexperienced" now. However, Lulu is on her third pilgrimage, Kimahri grew up a Ronso, so is probably even stronger than Auron because of his genes, and Wakka wouldn't have come along if he didn't have battle experience.

@ Avarice-Ness: I assumed that your party in VI took the name "Returners", because Locke and Edgar were already members, Terra and Sabin joined the Returners as well, and your party grew from there. So, my statement should have read:

Kefka: Beaten by your main party at least twice.
1. Defending the Esper at Narshe, when you split your party into three groups.
2. The final battle.

Also, I doubt Kefka LoJ would be effective on Sin, since we never see it in action against anything that can fight back. Recall Operation Mi'ihen, and the Al Bhed's machina attack on Sin.

@ Elpizo: The only reason GG has to charge is because of the Hymn. Without it, the battle with Overdrive Sin would have him start with a full OD bar, ambush you 100% of the time, and be able to bypass First Strike. Am I getting my point about GG across?

@ Wolf Kanno: Attacks like Big Bang, Particle Beam, Ultima, Supernova, etc. are game mechanics because the animation is exaggerated. It causes massive explosions, but does not blast your party into tiny little pieces. GG's effect is exactly what the animation suggests: the party is crushed by an unblockable attack. Try casting Auto-Life in that battle and letting Sin use GG. Did you party survive? No, they didn't. This is because GG is more than a mere game mechanic. It's in the same boat as LoJ