You mean destroying universes using an anti-matter canon, struggling against Spectre and getting defeated by the combination of Kal-L, Superboy Prime, Alexander Luthor and Darkseid?
You need to go back COIE then. At the beginning, yes, Anti was using his anti wave to wipe off Universes. Then, he was using that energy to power himself up.
At the end, Spectre blasted Anti with a blast called Creation Blast. The blast was so strong that Spectre went into a coma. That blasted showed the Presences dreams of Universes that were dreamed off but never to be. That blast itself wipe out the 2 Infinite Universes, the Anti and the Positive Muliverses and fused them into 1 Universe. Anti Monitor took that blast at point blank, though weakened, was still gearing to go on.
Pre Crisis Darkseid used Alexander has. Proxy and cheap shoted Anti after he was weakened. And if you know anything about Pre Crisis Darkseid, then you know he was a force not to mess with.
I'm not seeing much of what you describe in the book at this moment. It doesn't appear to be Spectre unleashing the so called "blast", but rather Spectre receiving the blast once Krona opens the portal. The energies released from Krona opening the portal are part of what AM desires and needs to achieve his goal.
And Spectre doesn't see Presence's dreams. He sees things that will never be and he sees things that The Presence has never dreamed of.
AM is at top power after this and is weakened after Dr. Light drains him. She is part of the group of beings that together flat out defeat AM.
And yes I am familiar with Pre-Crisis Darkseid being beat being rag dolled by an alternate Dark Phoenix (Isn't there only one Darkseid?)
This isnt even remotely a spite thread. Herc flat out has a chance.
Spectre's master wasn't revealed to be the Presence at the time. It was just known as the voice. However, it should be also noted that a part of the same comatose Spectre destroyed the entire universal timeline of the 1945 era unintentionally/subconsciously.
Peak AM = AM at the dawn of time. Not after his battle with the spectre which you're referencing.
AM was already equal to the Monitor when the latter was powered by infinite universes. From that moment on, every time he consumes a universe he absorbs its power. So basically, he was twice as powerful as a peak multiversal being.
Monitor at his weakest (when there were only 5 universes left) created a self contained multiverse which can house entire universes within it.
And Spectre was amped to a point where he was apparently beyond his master (the voice), who despite not being established to be the presence was still a multiversal force.