In "Fury X mining performance" thread on your screenshot I see "lowdifficult" error, so it is not real speed. For example, 290X shows 1400h/s if you use miner for Catalyst 13.12 on Catalyst 15.x, but you will get "lowdifficult" errors for all shares. So the only way to test Fury X right now is to use miner for Catalyst 15.x on Windows. Moreover, for Fury X it is necessary to change HashCnt parameter to find best speed.
Ok, installed Windows with Cat. 15.x and the results can be found in the fury X performance thread.
https://bitcointalk.org/index.php?topic=1116027.msg11975615#msg11975615I did play with the HashCnt parameter, best result is what you can see in the screenshot.
Greetings!