User blog comment:Pawn of Atlas/Important Discussion for Rapture Storyline page/@comment-4959479-20140329124131

Sorry, I'm having trouble replying to a reply on my iPad. Anyway, fair point on the use of art assets from Bioshock 2 and references, but I really think you're reaching if you want it to be two separate universes.

Also, a deus ex machina is a plot device in which some force comes out of nowhere and resolves the problem. That's not Elizabeth in BaS. All she did was fulfill a role in the plot that we knew had to happen anyway.