Why did PLD get such a buff

[Awful]

Because no one was playing paladin in Alex savage and wasn't able to clear unless they switched to Drk and War due to the high DPS they bring, so paladins had to wait until they had enough gear and which by then the rewards didn't justify the means. The reason paladin got these buffs is so that all 3 tanks are viable in content and that one's not left out which is why everyone can do content with every tank as the next tier of Alex is not going to be as DPS check heavy (from what we know of) it'll be more mechanic based. Drks are very strong tanks and even compared to paladin they have more options as cover, tempered will are still not used in paladins tool kits, but at least they got a buff to Clemency and Divine Veil which is a step to the direction. Drk uses ALL of their toolkit and it works well with them i'll stand by that till the end, these changes were needed to balance all 3 tank classes and not leave paladin yet again in raid content.

Tldr; paladins won't out dps Drks they haven't nor will they just needed these changes in order to keep up with the other tanks and secure a tanking spot rather than lose it again in new raid content.