"First Gods" (as in the first of their generation of deities) are probably particularly powerful compared to deities who come later in their pantheons, regardless of the level of faith bestowed upon them. After all, most pantheons have some sort of Creation Myth, revolving around only a handful of deities, from which all the following deities are either their children or have some sort of apotheosis myth associated to them. Only the First Gods seemingly come from nothing before doing the flexiest of flexes and "make the heavens and the earth" from equally nothing before there is anyone around To worship them.
Something Thor and Poseidon said to Taylor after she ate The Peach has been rattling around in my head for a while now, and I think it's relevant to this.
Thor nodded. "Aye. We saw it off. It shan't return for at least a thousand years, but it cost us everything." Apparently noticing her horrified look he added, "This is not unusual for gods. Ragnarok, of a sort, comes around every few thousand years. That era's gods see it off and everything continues apace. Why I think we lasted longer than most have."
Poseidon chuckled. "Longer than the Mesopotamian gods. I believe it might even be a record."
Multiple "Ragnarok"s, and their generation of gods "setting a record". Now... there aren't really all that many "Civilization Generations" between Mesopotamia and the eras of what we generally consider to be the "classical gods". In fact, to my knowledge, the fall of Mesopotamia more or less transitioned into the beginning of that age, making (roughly) only two prior generations of deities before Taylor, making hers the third if you don't count the rise of Judaism, Christianity and Islam in the closing days of Rome. If that is the case saying they "Set a Record" doesn't really make sense...
Unless... there were civilizations before Mesopotamia, with gods of their own, and their own "Apocalypses" were so thorough that only records in the Celestial Realm remained to tell anyone of their existence. Maybe the entire face of Earth was wiped out so thoroughly once or twice that the forgotten First Gods of the long dead past really did have to remake the surface of the world and clear up the atmosphere, thus "making the heavens and the earth". Or perhaps the entire planet was destroyed like what the Entities cycles affect, and they had to remake the entire world from scratch.