
Originally Posted by
Varodoc
Which is something that Horde players online also do and even blame him for Sylvanas getting killed by Arthas and then nuking Teldrassil. I once saw a Horde player who unironically, genuinely, with a straight face blamed Terenas for the Burning of Teldrassil and said that Terenas was responsible for the Burning of Teldrassil. So your attempt at a "gotcha!" moment failed.
Aside from that, no, they are not the same situation at all. Considering how Zul was Rastakhan's direct subordinate and council advisor, while the leaders of the Scourge were not, actually, Terenas' subordinates. Ner'zhul was an orc, Mal'ganis was a Nathrezim, and Kel'thuzad was a citizen of Dalaran.
There's also the fact that, unlike Rastakhan, Terenas was growing quite senile and weak, this is Canonically acknowledged in-universe by Salramm the Fleshcrafter, a necromancer who took part in the Culling of Stratholme:
So, unlike Rastakhan, and in his defence, Terenas had grown quite senile by the time of the Scourge (due to having ruled for so long and being old himself), so understandably he had to delegate most ruling matters to his council and to Uther.