Using that logic, you help support my point: that if the Sun is Magnus, then the All-Maker isn't Magnus.
However, if you consider that the sun
isn't Magnus, and is instead a rip in Oblivion created by Magnus, then the All-Maker is Magnus.
Personally, i think the Skaal have the closest thing to a proper view on Nirn, with the All-Maker being personification of the good things created by the Godhead, whereas the bad things are the Adversary, which is also the Godhead. Where as most of Tamriel is fooled into thinking that the Godhead = 16 or so Daedra + 8 Divines, or the Ra Gada, who believe in Vivic-knows-how-many gods, they have it down to two, which is the closest to the truth that any cultures have arrived at. Of course they still have it wrong, but they are closer than anyone else.