User blog comment:SayuriDarling/The House of Hades Official Discussion/@comment-24065371-20131018135727/@comment-4727448-20131019195033

Percy vs Jason is debatable, I'd say phyrric victory for Percy.

As for Percy vs Nico, Percy would have no difficulty beating Nico, unless he took advantage of raising the dead and/or shadow travelling. Both of these would drain him immensely.