I feel like High Fantasy is getting mangled a bit in this thread.
High Fantasy does not have some inherent property that good always triumphs over evil, except in the same sense that Sword and Sorcery has the inherent property that the protagonist always prevails because he's a badass. Its like there's some shifting of the bar going on... for example, James Bond always wins because he's the protagonist. But, that sense of "always wins" is a meta-story concept. Within the actual story his victory is not inevitable, he still has to go out and risk life and limb and actually defeat the bad guys, and if he screws up London will be eradicated with a moon based ketchup ray or whatnot.
Oh, and christian theology is getting mangled a bit in this thread as well. I'm not going to go into this too much, but suffice to say christian theology generally does not conceive of the triumph of good over evil as being inevitable in the affairs of men.
Zulgyan said:
The gods from the novels are not Gods in the way modern theology and philosophy interpret the concept of God. They are just ultra power beings on different sides of the conflict.
You're grouping way too many religious traditions under this weird phrase, "modern theology and philosophy." There is no modern, religion-independant concept of what god is really like. There may be a consensus within
christian theology, or even judeo-christian theology, which is fine, but theology is not a field like biology or chemistry. You can't take your theological findings and double blind studies and experimental data and walk over to, say, a shinto shrine and explain to them that their concept of god has been theologically or philosophically disproven. Theology (almost always) proceeds from initial premises which preclude that sort of universality.
For the record, these statements are not particularly controversial amongst theologians. The wikipedia article on "theology" is not a bad source if you're looking for a quick summary of how "theology" as a field relates to inter-religious discourse.