User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-170.235.245.55-20130515185525/@comment-7742465-20130516144321

We never see who is the most powerful. We only have a small fight scene them that doesn't resolve who is stronger. In TTC, We have a fight between Percy and Thalia, who has the same powers as Jason (except flying) and in MoA we have a fight between Percy and Jason. Both battles aren't resolved, so we don't know who is stronger.