User blog comment:Cfp3157/Percy Jackson vs. Harry Potter/@comment-4392864-20131102233621/@comment-4392864-20131103135729

In that case, providing that Percy can make it to the lake, the half-god will have all of the advantages- in that he can use the water for both offensive and defensive purposes. Also, Percy can breathe underwater- Harry can't.

On the other hand, Harry is very good with his magical abilities. If Harry realizes that Percy needs water (for his "spells" to work or whatever), the wizard could immobilize his foe, or send him someplace else. However, Harry needs to keep a hold of his wand in order to use his spells.

Overall, this will be a very close battle, but Harry might have a slightly better chance at victory, though I wouldn't count Percy out- he gets to that water and Harry will be all "washed up".

In any case, since both of these young men are Heroes, it wouldn't be like them to just attack each other without reason. I propose that the battle should be something of an Exhibition Match between their two schools/camps/whatever, and in the end, the two of them shake hands, heal the others' wounds, listen to the advice of the teachers/trainers, and all that other Good Sportsman Conduct stuff.