To get straight to the point: yes, Babylon’s Fall contains gear and emote data borrowed from Final Fantasy XIV.
The data borrowed from Final Fantasy XIV was used for gear from the introduction to mid-level range of the game, which is why they were so prevalent in the Closed Beta Test.
We then carefully implemented the data while closely coordinating with the Final Fantasy XIV team.
When I gave my Babylon’s Fall presentation at a company meeting, Final Fantasy XIV Producer & Director Naoki Yoshida was also in attendance and offered his help, to which I replied, “Yes, please!”