I don't think I've ever been wrong before, and I wouldn't start in this thread.
Gaea is more of the type of character who has immense power contained within, but she's utterly useless when she puts that power to use. Both Dormammu and Odin have had forced consensual sex with her. In Fractions whole run her sole purpose was to shoot boob juice into a baby. She was tied up during an entire comic run in either the Order or Defenders V2/3.
She could create a dude to beat these dudes with her own dude power, but her herself would be just another in a long list of names in the consensual sex victims list.
Cthon, or Set would be a better battle. At the first sign of struggle Gaea smokes some grass and turns her ass.
What does this pic have to do with the the Godhead ??
Gaea gave birth to most of the Godhead except for Odin, now Gaea was imprison in the center of the earth by Dormammu by using dark magic, and Dormammus is a equal to Odin, Zeus etc.
So it's possible they can beat her by using arcane magic, by far she is the weakest of the Elder Gods Elite since Atum, Set, Chthon, Oshtur are above her.
Majority of the Godhead would be fighting their mother, Grandmother, Aunt etc
Strange's and Surfer's attacks have often damaged or at least stung Galactus. Thor, too, has caused massive damage on Galactus' head so I'd think Hulk pounding at his dome would have some effect as well.
But Gaea didn't even register their combined attacks; she completely no-sold them all. Her durability seems to be way above that of typical Galactus.