just something I think worth adding to what you say.
Brahma isn't described as the chief of all the gods in the suttas, I haven't looked into this in any way but I believe that in the order of Divine beings/realms the Brahma realm/beings aren't even the highest.
Sumedho in his Book 'The Four Noble Truths' says that the Noble Truths are Noble, not because they are metaphysical statements but because they are reflective.
nice post BTW
He who knows only his own side of the case knows little of that. His reasons may be good, and no one may have been able to refute them.
But if he is equally unable to refute the reasons on the opposite side, if he does not so much as know what they are, he has no ground for preferring either opinion …
He must be able to hear them from persons who actually believe them … he must know them in their most plausible and persuasive form.