First of all, there was another thread contesting Majora's tier; while it is stated that he corrupts time, space, and the heavens. And it's also stated that Termina is indeed a parallel universe as shown in the OP. Corrupting the Universe is simply range and hax, it's not
Attack Potency. If there was a scan that says he created Termina, than the Tier is fine and in fact. It would sound
Low 2-C rather than
3-A as the term "Parallel Universe" or "Alternate Reality" typically refers alternate timelines indeed. But that should get a scan if retrievable.
Regarding the complete Triforce, there are multiple translations aside. And yes, a "Symbol of their power" does more so imply a fraction of the Goddesses power rather than all of it. Same with "Forged from their power". Simply saying it holds their power doesn't mean it holds all their power. Which means the Complete Triforce < True Power of the Golden Goddesses.
Anyway, Demise nor Ganondorf did not surpass the golden goddesses, it simply says he wants to surpass them. Which is contradicted by
this statement stating that he cannot control the goddesses even if he did access the complete Triforce. That's why in the Downfall timeline, Ganon doesn't just become invincible nor did he drive away the Golden Goddesses. The 7 Wise Men were able to seal him away, proving that even with the complete Triforce, he's still not the strongest thing in the verse. If the goddesses are able to find or use those capable for sealing Ganon's power, then that also shows they still have far greater power than he does.
Regarding the "Evil counterpart", that's more so referring to their creation and not the goddesses themselves. Devils are equal to angels, they're not equal to the Holy Trinity. So at best, Demise could be seen as a counterpart to Hylia, which I'll explain the details later.
Anyway, Hylia and Demise based on the scan are evenly matched. Yes, it is true that Demise does hold the advantage in raw power, but she was still able to best him and seal him away. And while the seal she placed on him was only temporary, she needed to weaken herself as a mortal to use the Triforce, which in turn wished Demise away. So Demise nor Hylia are anywhere near the power of the complete Triforce either.
The Infinite power statement is kind of a throwaway hyperbole. And we already know from scaling chain that Golden Goddesses > Complete Triforce > Demise/Hylia > Light Force. Light Force is merely a fraction of Hylia's power in the same vein Triforce is a fraction of the Golden Goddesses power. That being said, the Master Sword is a true essence of Hylia meant to give her power to the Spirit of the Hero in which she created. So the True Master Sword is indeed part of the scaling chain, but still outside of the Golden Sword form, it's not Complete Triforce tier.
That being said, there are other things I was planning to revise based on several things brought up. I do understand the cosmology of the multiverse is deeper than we thought. And there are also good points about our standards on assuming Hyrule, Lorule, ect are all simply Tier 4 sized pocket realities that are parallel to each other as opposed to universes given that both Termina and Subrosia has "Parallel Universe" statements. In fact, Hyrule/Light World does have starry skies and constellations to assume it loosely takes place in the Milky Way Galaxy. But should be saved for another thread.
Anyway, I'm at the very least thinking we should upgrade Hylia and everyone comparable to her as
4-A via being superior to the Wind Fish. Other details suggest that Light World, Dark World, Lorule's dimension, and the Sacred Realm are all literally alternate dimensions. Meaning each of them clearly have their own bodies of space. And if they're parallel to each other, they should be the same size. Sacred Realm is at least Earth to Sun distance, aka at least
High 4-C. Hyrule consistently has starry skies and numerous constellations; thousands of stars = At least
4-A. I'm unsure about Vaati's feat, but may comment about that later.