Originally Posted by §håd0w
(Need this for reclarification purposes)
Heh, it's all good. How can I say this...
When they were fighting Edea, they thought she was the Sorceress that SeeD was meant to fight; not Ultimecia So in a sense, they were fighting Edea, and not Ultimecia, since they didn't know anything about Ultimecia at the time being. Though really, it was more of them fighting Ultimecia's conscious in Edea's body.
This is a bit hard to support since my opinion constantly changes. Rinoa and Ultimecia do have different minds so it seems; so it is possible to argue with that that they are not the same. But you can also argue that they were the same in birth and her conscious has just changed. It's a tough theory to proove or to disproove. Hopefully this made some sense, I actually had to think it over, heh :p