Please bear in mind that certain attacks are altered to not be stupidly overblown. This primarily applies to Final Fantasy Villains, such as Kuja and Sephiroth. Sephiroth's Super Nova, for example, is changed to a huge explosion of fire that expands outward from his point.

This is not necessarily saying Sephiroth will lose, but this is also not saying he will win. Just be aware that any stupidly overdone attacks will be changed for this iteration of the tournament.