Good thread. I'm honestly unsure...
On one hand DCnU Darkseid killed all the Gods of the 3rd World and absorbed their powers, was stated to have destroyed universeS, was so powerful that AM had to absorb entire universeS prior to their battle, and was stated to possess power no less than equal to the 'infinite' energies of the GL Central Battery.
Conversely, PS is a bonafide peer to Spectre -- to the point that God himself had to directly intervene in their battle(which would have potentially laid waste to creation), and can survive literally being unmade at a conceptual level-- the most complete oblivion possible.