To me, much of this footage shot with the GH4 and 2x Anamorphot looks very impressive. Certainly as impressive as anything I've seen shot with the A7s. But if someone has some footage from the Sony in mind that looks better and has more of an anamorphic feel to it I'm happy to take a look.
By the way, you might want to mute the music. Also, he was trying out various lenses with the Anamorphot, some of which work better than others.