Burning thought
Restricted
The planet should technically fall apart regardless of what hes doing assuming the GoW universe and greek mythology displayed perfect physics. It would crumble and shatter around him, also if he was holding up the planet, what is he standing on?
By the sounds of it your talking about gameplay mechanics, wheras the only hercules in-game showings put him at a few hundred tons at best in his cutscenes and show his limitations, I think your toying with what "the world" means to mythological greece and what a planet is physically to modern science. You would have to do better than have a statue of Atlas with a sphere on his back to suggest he has the strength to lift trillions upon trillions of tonnes.
Hercules is even more unlikely than Atlas, if Hercules exerted Sextillions of tons in his body the arena would not stand unharmed, or with nothing but a few piecies crumbling from it. Neither would the gate Kratos launched him into stay unharmed, infact any exertion from Hercules assuming Greek mythology has knowledge of real world masses of the earth would cause him to bury/collapse Olmypus (or fall through it) the moment he leapt down to meet Kratos in the arena 😉
Further, Hercules does not even mension holding up the planet to Kratos when going through his adventures, he complains at how Kratos gets all the glory and how the Nemean lion is one of his few glorious actions, would you not think the pinnacle of strength would brag to Kratos about how he can lift up the planet?
Too many contradictions, assumptions and illogical beliefs would have to be made on the fans claiming the characters held the Earth as we know it on their shoulders with notihng but physical force.