First things first, hello everyone. :mage:
I'm new here but have been into The Elder Scrolls since I first played Morrowind and have read up on a bit of lore. I consider myself fairly knowledgeable in some topics but rather ignorant in others.
So the question. Why is Lorkhan often referred to as the "God of Men" or "Champion of Men" or something like that? Is this just short-hand for "Champion/God of all who believe that the creation of Mundus was a good thing" seeing as the majority of Men believe so and the majority of Mer disagree? What about the Dunmer and Redguard, how does Lorkhan feel about them?
Most questions regarding the creation myths, pantheons in general, and so on can be answered with these three books
http://www.imperial-library.info/content/morrowind-monomyth
http://www.imperial-library.info/content/morrowind-varieties-faith-empire
http://www.imperial-library.info/content/morrowind-annotated-anuad
So, why is he? Well, men, along with Vivec, view the creation of Mundus as a positive thing, a testing ground so to speak in order to go to a greater existence. As such, they believe Shor/Shezarr/Lorkhan's sacrifice to be positive. In addition, incarnations of Shor/Shezarr/Lorkhan have appeared as avatars to aid mankind against mer or to help man in general. Two of the more famous, though also quite infamous, are Pelinal Whitestreak, and the underking, Wulfharth.
As I noted, Vivec views the space god in a positive light, though his reason is slightly different than most of mankind's idea There's a good chance so due the dunmer, as they regard the daedra as ancestors too and mainstream mer call Shor/Shezarr/Lorkhan a daedroth, or "not our ancestor." However, I'd assume your run of the mill dunmer isn't going to really know, or care.
For the Redguards, they're Imperialized to [censored] hell, so they're just a bunch of Niners. Though, what you probably mean are the Yokudans. For them....[censored] it I don't know. I'm not very well versed in Yokudan culture and myths.