Well, assuming his 1314 MHz is actually stable, would that make sense?
Like I said, there's a lot going on that can affect those scores. ie.,
Memory type and clock. Hynix scores better than Samsung for these cards in my short runs.
Core Clock stability. You might not have seen it, so make sure you test the clocks thoroughly. Are you throttling?
OS version - Windows editions does a few things with graphics.