No I understood your point.
My point is that exposure itself is a meaningful thing. Alliance and more importantly its heroes are getting a huge amount of exposure in Legion. Horde has had the opening (shared), Stormheim where Sylvaanas proved the opening meant nothing to the story as far as Horde is concerned (also shared with alliance), and Suramar where the horde and alliance are mirrored.
Alliance has had the opening, Stormheim, and Suramar, alongside Horde. As well as the Velen story, the Anduin story, and Val'shara.
Horde just has very little presence, while Alliance has major. Heck a lot of the class halls have faced criticism for being central to Alliance races (Paladin for instance being a major one, Priest being another), while none of the them could be said to be Horde centric aside from a token showing here and there.