Let's get right down to the bare bones of this fight. It's two bosses beating the ever loving crap out of each other. Antenora and Jenova are going to throw ever high damage move they have at each other until they drop. So there's no need to wax on about status or magic or anything special at all. All we need to know is that Antenora can take a licking and keep on ticking, with her boss HP and good damage. She'll launch Epheromon and Shockwave as many times as she needs to. Sure, Jenova will try and drown her with Aqualung or burn her with lasers, but she can't keep up with Antenora's overwhelming assault or plentiful HP, and that's what'll be Jenova's downfall in the end.