Spectre's best feats are beating Mr. Mxy, CAUSING Parrallax to burn out mosy of his power, turning the PS into a mouse, commanding the logoz,and Causing the AM to ultimately fail and wiping out everything.
Mxy has owned Spectre like an insect countless times. PIS.
And lost to Parallax who is slightly above average Galactus.
Phantom Stranger is sky-father level.
The LOGOZ merged with him.
He was amped and so was the AM.
lets get something straight. You said Spectre holding two universes part was hardly abstract in power. That was crazy. Odin Couldn't do that. Of course that is abstract in power.then you say Parrallax was slighty above an average galactus. Even if that were true, that would still be absyract power. And Parallax created universes in passing thoughts. Never knew Average Galactus could do that. Then you said PS was skyfather in power. And yet Soectre could Kill DS in his actual form, but could not kill PS. Skyfather my ey. Far beyond. Mxy has beaten Spectre Prime? Never. He bound Spectre to all reality once and prevented him from moving lest he destroy everything.That is afeat for both. If Spectre acted, his power would destroy all reality. Odin couldn't do that on his best day. Spectre is def far beyond Skyfather and yes, Shazam gave the Spectre, the one that depowered mxy, and turned PS into a mouse, fits.
A cube being could easily replicate Spectre's feat(when he stopped two universes from merging with each other). And cubes have easily created entire universes and crap. Yet in Inifnity War Galactus resisted FIVE cubes. < and that's average Galactus.
Galactus isn't an abstract. He might be 'related' to abstracts but he isn't a true abstract at all.
You know there are still elder gods, cube beings, and celestials above Odin's tier which is sky-father level? Galactus on average is mid to high celestial level.