Revelations from Patch 5.2

[Pepsi_Plunge]

How the kupo did they get combat data on deus Darnus? She only appeared in her winged, facemarked form in the Binding Coils... and the only people who saw her down there were Alisae and the WoL, so what the kupo is going on?!

I don't see a problem here.
Nael van Darnus was one of the Garlean Legatus and one of the Empire's most accomplished warriors, of course there is combat data saved on her. What you are talking about are the events of 2.X where she was resurrected, but before that in 1.0 she already played a huge role in the story and was the head behind Project Meteor, the summoning of Dalamud and the destruction of Bozja Citadel - things which will probably come back to haunt us in future patches.