Saw this on a thread on mmorpg.com
http://vda.gtarcade.com/?q=150201Q2ntMp2
There are 2 different videos if you refresh the page.
One's from FFXIV:ARR, the other is Heavensward with if I recall Warcraft soundtrack.
Can they even do this? -hehe-
Not my first time seeing them take material from elsewhere.