well maybe its for the big PvP rework that they are implementing now (we got only one patch and one patch notes out of 4 that are planned) so we will see when its finished. And whats more if its nerf for everyone and everything then its not that big of a problem at all ... in PvP others will get nerfed gear too and bosses are easy to beat without any special equipement.

BTW: your chance of getting legendary items should depend on your lvl ... but I am not sure about numbers and I am too lazy to look for them so I cant say more