1960s Galactus Vs Superboy Prime

Galactus is well-fed here, but to note, the UN in the 60s was only capable of destroying a few solar systems at best and Galactus obviously feared it's power.

PIS and CIS are off.

Galactus

Still Galactus. Even the lowest estimation of his power (the equal of PC Darkseid) puts him above Prime.