Thanos is powerful, able to go toe to toe against Odin, without any enhancement’s whatsoever, no gauntlet, no cosmic cube, nothin.
For detailed information about this series, visit the Gojipedia. Lets see the largest version of Godzilla is 1000ft tall (Earth).

Godzilla slashed with his claws, hitting Galactus's chest and putting a scratch down his armor. Like most franchises, Godzilla has several different continuities and spawned many comics, mangas, games, TV shows, etc., so, the canon can be confusing. Galactus then continues the combo with a kick, two more punches and three energy blasts, before using a building as a bat and knocking Godzilla back. As a Godzilla fan i would have to admit Galactus wins this round for sure and i am not a marvel fan but i do know who Galactus is. Galactus's fury was then perhaps only equaled by Godzilla's own. Godzilla charged again, but this time the Devowerer of Worlds was ready for it, and sent a tremendous punch into Godzilla's jaw, dislocating it. Godzilla (Composite) is not happy about it. Galactus is harvesting Earth. The Godzilla series is a kaiju franchise made by Toho. Know Godzilla and Galactus feats before commenting. Godzilla and Galactus start to wrestle a little bit before Galactus uses a slap to knock Godzilla backwards. It features Godzilla, Rodan, Mothra, King Ghidorah, and many others. But against Galactus he would have no hope.