User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-2.50.239.45-20130331135159/@comment-5774152-20130402040843

Uh..no. Percy is more powerful than Jason. Hazel said that Nico was the most powerful demigod that she's ever met until she met Percy.

And Nico said that Percy was the most powerful demigod he's ever met so (did anybody else think that was kind of funny when he said that right in front of Jason since he and Percy have sort of a rivalry going. Anyways,)...i'm not quite sure where you got that from, but it is clearly stated Percy is stronger.