I don't fully understand this at all. I understand that Cissnei says that isn't her real name, and otherwise all we have is the BC title.
But, here's the thing - Balthier, Edge and Shadow are all better known by their nicknames, and we all know their real names. Yet, we host their pages on their nicknames, not on their real names. So why is Cissnei here? Sure it's just an alias, but that's nothing new to the series. Should we move Shadow to "Clyde Arrowny", and Balthier to....however the hell you spell his real name? Also, Cissnei plays a much larger role in Crisis Core with a defined character and role, while in BC she's just a generic playable character interchangeable with any other. And the CC info on this page is more prominent than the BC info.
I just don't see why "Shuriken (Female)" is a better page name than "Cissnei". Though I don't make it a habit, I have to agree with AJ on this. Cissnei would be a better name for the page.