Please, I'm going to write it in bold font for you:
I'm not arguing about wether or not we're going to see a WAR exodus if there's a nerf
What my argument is:
The WoW Tank sustain pre-nerf and the XIV tank sustain live are two completely different situation.
I've brought my proof:
-Footage demonstrating pre-nerf and post-nerf to WoW tanks.
-Patchnotes showing the massive nerfs.