Man of Miracles / M.O.M. wins.
The Classic Beyonder is one of the most powerful characters in comic books, but MOM is Image's version of The One Above All / Presence. He/She is the Ultimate Creator, the Alpha and the Omega, the all.
Classic Beyonder is an omnipotent being seeking knowledge and plagued by desire. MOM is not an incomplete intellect, he/she is an infinite being beyond such challenges.
Man of Miracles / Kali / MOM / Creator wins.
Originally posted by Astner
It's never established that the Man of Miracles is omnipotent, and there's plenty of evidence to contradict the proposition that he could be.
M.O.M. told Spawn directly that he/she is the Creator of the Universe and the Destroyer of Worlds. "There is No Power Greater than Me". He/she was the Supreme Being of Image Comics. He/She created God, Satan, and endless immortal gods.
The only "evidence" we have to contradict his/her position is that he/she will not act in a way that contradicts his or her own rules of nature that were established from the beginning of creation. Spawn asked her why she couldn't just erase Armageddon and prevent all the death, pain, and suffering. She responded that it is not the way this works, that her Laws for the Universe are Eternal and Established and that Earth has to prove itself worth saving - that Humanity has to prove itself worth saving.
She thought the Human Race was special, but not special enough to defy her own laws and over ride the natural order. She gave Spawn a chance to save his species from God and Satan once and for all. She then allowed Spawn to re-create Earth, while the old Earth was locked in a parallel dimension where God and Satan would fight for all eternity.
M.O.M. knew exactly what she was doing. She doesn't have to save the Human Race, there are plenty of life forms under her order. She simply felt pity and threw Spawn a boon to give him some chance to save his species. If he failed, that would have the end of the story, and she would have moved on to create and destroy other worlds.