It wasn't even a fight, Captain America with just his shield and wits would have been written giving Thor more of a fight than Galactus. Bear in mind this Galactus had recently consumed 5 giant planets. This should've been Galactus in Celestial busting mode. I am a big Thor fan, one of the biggest, but this was bad/lazy writing. I have no idea why Thor was able to take the power cosmic away from Galactus.
I wanted Thor to have some good showings after everything the previous writer put the character through but this was an over correction. There has to be a balance between Thor being whipping boy and the other end of the spectrum where he looks ready to take on The Living Tribunal.
On a side note, I don't know about you guys but I'm starting to have Thanos Fatigue.
Just was really bad to have the big build up that Galactus was now getting those 5 special worlds, and for what, to become a big bomb?