User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-5851009-20121211073606/@comment-3146930-20121211205646

To a certain extent yes, but I feel there is something you don't notice. When Camp Half-Blood was fighting in New York City, they were mostly fighting monsters and Titans, creatures that will eventually rise again if they are killed. If Camp Jupiter and Camp Half-Blood went to war, they would have to fight living, breathing people that once they are killed won't come back. Percy for example hesitated many times during the Percy Jackson and the Olympians series to kill another demigod, even those working for Kronos. Other demigods probably feel the same way, as Percy and Jason were simply knocking demigods out or blowing them away when they tried to protect the ship. Camp Jupiter on the other hand is out for blood and weren't holding back when they tried to attack them. It is really a matter of mentality.