I love how no-one even acknowledged Caterina's passionate (and detailed) defense of Warcraft's lore.
Because there was nothing to acknowledge. We know WoW has http://www.worldofwarcraft.com/info/story/chapter1.html, and anyone can speak at length about how someone did something to someone else and a magic artifact was involved and something changed, and that's why blood elves are high elves who practice blood sorcery. But that doesn't make it very good.
I could probably speak indecipherably at length about Warhammer too, about how Commander whatshisname proved that the Tau's greater good is just a thin veneer of civilisation kept in check by the pheromone-based coercion of the Ethereals, or even mention the occasional ambiguous story, one of which suggests the Eldar Laughing God is the same entity as their foe, the C'Tan Deceiver and how the...
But I'd be joking if I said either of these had the same sort of depth as TES. Ideological, cultural and political conflicts are reduced to caricatures. Night elves and trolls share a long enmity because they both occupied the same geographic space. Great. The twist is, they might be related. The aforementioned High Elves split from the Night Elves because they practiced magic associated with evil demons. And that's what passes for history.
In TES, culture and religion informs almost every detail. Dunmer savagery has a reason ("needed to remove us from the Altmer"). Altmer xenophobia is grounded in religious and cultural beliefs. Bosmer aren't just a bunch of tree-hugging hippies in tune with nature; their carnivorous appetite has both has an explanation and subverts a common trope. Conflicts are largely political or cultural. And the gods aren't just some beings who did stuff ages ago, they're real, and their aspects and nature vary depending in respect to those beliefs that a certain culture holds.
Compare the beginning of the TES universe with that of Warcraft's:
The Titans, colossal, metallic-skinned gods from the far reaches of the cosmos, explored the newborn universe and set to work on the worlds they encountered. They shaped the worlds by raising mighty mountains and dredging out vast seas. They breathed skies and raging atmospheres into being. It was all part of their unfathomable, far-sighted plan to create order out of chaos. They even empowered primitive races to tend to their works and maintain the integrity of their respective worlds. Well, don't even try to express it. It's unfathomable!
Ruled by an elite sect known as the Pantheon, the Titans brought order to a hundred million worlds scattered throughout the Great Dark Beyond during the first ages of creation. The benevolent Pantheon, which sought to safeguard these structured worlds, was ever vigilant against the threat of attack from the vile extra-dimensional entities of the Twisting Nether. The Nether, an ethereal dimension of chaotic magics that connected the myriad worlds of the universe, was home to an infinite number of malefic, demonic beings who sought only to destroy life and devour the energies of the living universe. Unable to conceive of evil or wickedness in any form, the Titans struggled to find a way to end the demons' constant threat. Wait, which were the good guys and which were the bad guys again? I didn't quite catch it.