Not a big fan of either.
I mean come on can we not play nice when it comes to hardware physics?
I went with nVidia because the selling point was Shadowplay and everything else is this or that selection.
With Shadowplay I can do a play blast of real game play development and then sit back watch from a spectator perspective. To me as a feature is more useful than a feature set as to performance which has always been subjective at best.
As an opinion if making a choice bandwidth is more important than overall performance or speed as to what works best with the engine. That’s Epics problem not mine. 