Also, they might have placed Varian in that station so that they can juxtapose him with Garrosh with the two being similar (as supreme leaders of their respectve factions) but with Varian being the "ideal" protagonist and Garrosh being the "messed-up" antagonist. "Varian is leading his faction the right way while Garrosh isn't."
What's funny is that they haven't really done this lately. The Horde storyline has switched more to "The Horde PC is amazing and noble and the hope for the future of the Horde." Garrosh is practically an afterthought.