Full Power Galactus vs Kubik vs Exitar
"Kubik's power seems virtually infinite by the standards of the human beings of Earth. The question remains, however, as to how Kubik's power level compares to that of the other beings known to be among the most powerful entities in the universe. Since they are all "Cosmic Cubes," Kubik's might is presumably equal to that of the Shaper and to that of the entity that is the combination of the false Beyonder and the Molecule Man. Responding to Bernard Worrell's fantasies. Kubik's power was capable of creating at least a duplicate of Earth (and its people) and the sun from the matter in a pocket dimension. Hence, Kubik may be more powerful than beings such as Odin, Zeus and the Watcher, who have not been shown to be capable of such feats. How his power compares to that of Galactus is unknown. However, Kubik may be less powerful than most known Celestials, and is definitely less powerful than the gigantic Celestial Exitar. Presumably Kubik is also less powerful than the true Beyonders, who created Kubik in the first place. Kubik is also definitely less powerful than Eternity, who is the sum total of the life forces of the entire universe, and is probably less powerful than the Living Tribunal, who serves as judge and executor of justice to the multiverse".