My biggest contention with this theory is that there exists another couple to which Azim and Nharma can be equated: Zodiark and Hydaelyn.The light and dark theme matches too, though the genders are mismatched.
The war between Light and Dark that Hydaelyn's and Zodiark's servants wage also fits the Auri myth, whereas (if I'm not mistaken) Bahamut and Tiamat never waged war against one another, not even after she was complicit in summoning a primal in his image.
The war between Light and Dark that Hydaelyn's and Zodiark's servants wage also fits the Auri myth, whereas (if I'm not mistaken) Bahamut and Tiamat never waged war against one another, not even after she was complicit in summoning a primal in his image.