User blog comment:Cfp3157/Percy Jackson vs. Harry Potter/@comment-4484220-20131105003818

It is only fair that a warrior should get to use their full potential in a fight on this wiki and have it taken into account when voting, so I will assume that Percy will make it to the lake and have the chance to utilize his full hydrokinetic abilities, and that there is no magical enchantment placed on the lake preventing him from doing so. Given that Percy's sword will be useless against Harry who is mortal, and that wizards from the Harry Potter universe don't use much close range attacks, close range can essentially be ignored in this fight.

Percy may have what seems like a greater and more overwhelming power, but what really matters is who can get the K. O. first. Water can only do so much. The most Percy will be able to do with it is try to flood Harry with water and either tire him out, or drown him. One problem for Percy is that Harry can perfomr a bubble charm that enables him to breath under water, so even if Percy contained Harry in an enclosure of water, he'd still be able to breathe, and cast spell from within.

Another huge problem with water being Percy's main mode of combat is the fact that it doesn't block any spells. In in the tri-wizard tournament when Harry was under water looking for that which was taken from him, we saw that both he and the other contestants were able to cast spells under water, and that curses were able to travel under it. So if Percy puts up a shield of any sort made up of water, anything Harry casts is just going to go right through it.

The spells Harry uses don't come across as very powerful, overwhelming, and aren't lethal, but nonetheless they work very effectively at disabling, or in some cases incapacitating the caster's opponent, which is all that needs to happen for Harry to end the fight. If Harry hits Percy with one stunning charm, he's unconscious, and the battle's over. If Harry successfully performs a full body-bind curse on Percy, he's frozen still, and won't be able to move a muscle, and the battle's over. Spells are made to end the duel in one shot if it hits a wizard. Basically, this battle is over as soon as Harry lands his first hit on Percy.

If a hundred different scenarios played out between Percy and Harry, the the former would probably be able to win some by overhwelming or tiring Harry out by engulfing him with a hurricane and/or swishing him around in enough water, but more likely than not, Harry will be able pull himself together for long enough to cast a few spells (that will, as stated above, be able to travel though water) and defeat his opponent.

My vote goes to Harry Potter, the boy who lived. His arsenal may not make as much of a show, but it gets the job done and works more efficiently to end the fight, which is what counts.