Which power is the most powerful?
CoSMic awareness: User is aware of anything that affects them on a universal scale including threats, anything that would affect them in any way, or even somebody talking about them.
Exemple: Captain Marvel.
CoMICs awareness: The ability to be aware that one's Universe is fictional, and potentially use this to act in otherwise impossible ways within their fictional universe.
Exemple: Deadpool and Gwenpool.
The battle is only between the powers. Not between those who own it.