So, first off, I only know about the UH DK legendaries. I have the belt and boots, but all UH DKs want the bracers. I finally got to run an LFR with a DK with bracers on an hour ago. Our ilvls were exactly the same but he beat me on every fight by 40k dps or more. Both of us ranked top 5% on everything, but he just spanked me. I did some more trolling on heroic/mythic rankings for UH, and the top 5% all have those bracers. Looking at the numbers, it really sucks knowing that no matter if two DKs were both 895 ilvl, the one with those bracers is going to be way ahead.
I know it sounds salty, cuz I am, but it made me wonder: do other dps classes have the same thing? Like, of all the legendary items for your spec, is there one that literally beats the shit out of the rest, but 40k dps or more. (40k single target, more on AOE) Just wondering.