There was a video posted about 1 year back.
It was where Vidal ran half the length of the pitch and he was seriously huffing and puffing. I thought that he was going to need an oxygen mask.
It was for Juventus. He was chasing a striker who was clearly more energetic and faster than Vidal.
After Vidal blew a gasket, Evra looked at Vdal, as if to say, "WTF!"
After seeing that video, I felt that Vidal wouldn't be athletic enough perform at the highest level in the EPL. I had visions of Vidal chasing Vardy around the pitch, but not actually being able to get anywhere near him.
Pogba is certainly more athletic and more suited to the EPL (IMO).