User blog comment:SayuriDarling/The Blood of Olympus Official Discussion/@comment-1820614-20141014181757/@comment-1820614-20141017221936

@Eternalmccarthy

Were the Giants harder to kill than the Titans? Thanks to their particular brand of immortality yes. Were they stronger? No, they were not. Percy needed the Curse of Achilles to make him both invulnerable and increase his fighting skill beyond what was possible for him to fight Hyperion or Kronos on his own and he still needed help to beat them. He fought Polybotes, one of the strongest giants on his own and beat him. And other demigods did so as well. They only needed the aid of a god to finish the giants off.

It was never made real clear what the Giant's plan was aside from a vague "destroy their roots." In this series, the gods are both tied to mortal civilization and not tied. Pan was forcd to live for thousands of years through prayers of satyrs and nymphs. Yet unheard of gods like Khione are plenty powerful on their own with no one knowing who they are or any real ties to Western Civilization.