You mean the two bottom tier specs? See the screenshot above your post (3.3%, 0.4%). Don't forget that both those classes were top specs 1.5month ago:
I would also argue that warrior has probably one of the worst world PvP as well (unless you kill something in two globals, which of course happens bcuz world pvp) and BG experience.dps speccs having 2k+ rating atm (top 10 speccs, worldwide):
62 arms
30 havoc dh
Actually, my warrior is now only a mythic+ machine and I rolled another class.
We will see how rogue rep behaves after the nerfs, but a week ago it was the most represented and OP dmg spec for sure