The quote says no human would be able to stop her and then specifically says a true angel or Magic God stepping up would be able to rival and defeat her
I'm simply gonna quote the novel once again-
After all, it is possible that human magic would not be able to harm her if she fully released Curtana Original’s power.”
If that happened, it would be almost impossible for anyone to rival Carissa unless a true angel or possibly a Magic God stepped forward
This is what you're basing your argument on, and the word rival has never been used
once in the entire sentence. It simply says that an angel or a magic god would be enough to defeat her- someone reach this nigga some english.
I really don't understand the logic of Fiamma being weaker than Othinus
The logic is that Fiamma went against Othinus and got literally stomped to the ground like a petulant child.
Your entire argument is a fallacy if you're scaling actual archangels in their true forms to humans from God's Right Seat. They merely draw a
fraction of power from them, that does not make them their equal.
Look at the Saints for example- their body resembles Jesus which allows Idol Theory to grant them a fraction of his power. Does that mean all Saints scale to the Son of the God?
So Saints are qual of Jesus because they draw power from him, Jesus who is actually God descending on Earth in mortal form... Meaning, by your logic, Saints now equal Ein Sof and were omnipotent and omniscient all along.
That's one contrived way to look at things. I would repeat it again- someone drawing a fraction of power from something does not make that someone equal to the source of their power. I shouldn't have to explain this but solar panels are not star level, bro. They just draw power from the sun, they are not actually equal to the sun.
Another point, Gabriel nearly distorted the universe just by existing in it. Fiamma lived on Earth his whole life and nothing happened, in fact he would've never needed to summon Gabriel in the first place if he was already stronger than her right from the beginning in base.