Oh please, neither side was getting anywhere till Odin over-reacted and double KOed them. And its not like Galactus didn't prep and bring his "fiercest" space demons and herald with him. (please log in to view the image)
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..even the outer hells are indifferent matters for they bow only to potent and archaic Nodens.
So yea, at every turn, Odin was losing ground during the tp battle and, at the end, broke it off to go physical because he couldn't do sh1t.
Oh yeah, Galactus concocted special space armor and brought all his trusted Heralds with him to assault Asgard while Odin was like "aw, wth, if he atks me, who cares, I got an unprepped Thor with me I dun care"... and even now, Galactus is all laid out and about to summon the Ultimate Nullifier cuz he got KTFO trying to atack Odin head-on...
... oh wait, that's pretty much the exact opposite of what happened. Headbutt something hard and hope someone incurs sweatdrops over it.