"Have you never heard of Onyxia? Have you never read the comic?"

Massive Retcon Warcraft Edition? Yeah, I have read that comic.

"Yeah, you'd almost think he just found out Thrall allowed humans to be caged and experimented on for the plague. Oh wait. HE DID."

Nope, Sylvanas, and he was appalled, and then he put in his personal guard to keep watch over the city after learning of her atrocities, Garrosh allowed what Thrall would not have - the new Forsaken. Now on the other hand Varian let the massacre of Taurajo go unpunished where the massacre in Stonetalon got someone thrown off a cliff by the Warchief himself, things aren't so black and white, are they?

"You do realize the implication behind the Alliance Twilight Highlands intro is that BENEDICTUS arranged that for the Twilight, don't you?"

...No such thing happened, that's a blatant lie, he had no hand in it, it was Varian attempting retribution after Thrall refused to act after the massacre of the druids, this was made crystal clear at least three times including the books, and I was there anyway, I did everything on both sides, the Twilight Highlands intro implied nothing of the sort.

You're desperate to play down Varian and attack Garrosh, the truth is they're both bad news and have shades of grey, although Varian may yet be redeemed and it appears Garrosh won't be.