Where did this narrative that specs are tuned around legendaries start? I just checked, and the data does not support such a conclusion. From another one of these posts (since we need a new post daily, clearly):
There are specs above and below the specs that can use the axe on the meters, and if the axe-wielding specs truly were tuned around having the legendary then shouldn’t the average performance across the entire player base put all those specs at the bottom? I mean across all mythic groups for the last day (to account for the buffs that went out this reset), both fury warrior and ret paladin are in the top 10, and unholy DK is in the top half as well; go to heroic to find ret paladin is top 3, and arms warrior joins fury and unholy DK in the top 10.