Board Thread:Questions and Answers/@comment-28265951-20160421125919/@comment-2112031-20160607204903

I've rewatched the episode whilst paying close attention to which one of them died.

During Barry and Zoom's battle, Zoom's time remnant (Zoom 1) appears to hiss right (our left) and it's Zoom 1 that fights Barry and gets killed by Zoom 2.

During their race on the Magnetar, Barry's time remnant (Barry 1) appears to his right (our left) and continues to run on the Magnetar and eventually sacrifices himself to stop it while Barry 2 frees Joe and fight Zoom.

It seems pretty consistent that the one that travels back in time is the one who dies.