After watching this video, I don't believe there's one male country artist that can 'vocally' keep up with Carrie. I believe she tries to hold back but its so obvious that she's a much better vocalist.
On a side note -- I accidentally listened to part of the iHeart festival on Saturday night. And I've come to the conclusion that many of the male country acts and the one female that I heard, can not sing LIVE. I was actually embarrassed for all of them. And the thing that was most disheartening, one of them was a current EOTY.