However, Jason has his own set of powerful abilities. His control over lightning gives him a great offensive power, and his ability to fly can give him an advantage in both battle and mobility. In some fanfictions where the setting is more favorable to his powers, he could be considered the most powerful. For example, in a high - altitude battle or in a place where there are a lot of electrical sources he can draw power from.
One interesting plot could be a competition between them for a powerful magical artifact. Percy uses his water - based powers, Jason his lightning and flight, and Nico his control over the dead to outwit each other in a race to find it.
Percy would win. He has a very strong connection to his powers. His control over water is so precise that he can use it in many creative ways during a fight. He can even use water vapor in the air to his advantage. Jason's powers, while strong, are more straightforward compared to Percy's adaptable water powers. Also, Percy has faced more life - threatening situations and has learned to be a better fighter overall in his adventures.
The moment when Percy and Jason first clash is always exciting. Their powers collide, with Percy's water meeting Jason's wind and lightning. It's like a battle of the elements. Then, there's the part where Percy gets surrounded by a whirlpool of his own making and Jason has to figure out how to break through it. Also, when Jason uses his flying ability to gain an aerial advantage and Percy has to come up with a new strategy to bring him down from the sky.
In other fanfics, Jason comes out on top. His leadership skills and ability to control the wind and lightning can give him an edge, especially when the battle takes place in an open area. Also, his Roman military training sometimes gives him an upper hand in strategic battles.
One popular 'Percy vs Jason' fanfic could be 'Clash of the Demigods'. It often features intense battles between the two characters with unique plot twists.
In my opinion, it's really hard to say who would win. Jason has his Roman powers which are quite formidable, like his ability to control the winds. Percy, on the other hand, has his water - based powers which are extremely powerful especially in the right environment. In a fanfiction, it could really go either way depending on how the author wants to write it. Maybe they could end up not really fighting but joining forces against a common enemy.
A great plot twist could be that they are both being manipulated by a third force. They think they are fighting each other for their own reasons but in reality, they are being used. Maybe a god or a powerful demigod is pulling the strings. This would lead to a moment of realization and then they would have to figure out how to work together to stop the real threat. Also, a plot twist where the Mark of Athena has a different meaning for each of them could be really engaging. It could be that Percy thinks it means one thing and Jason thinks it means another and their interpretations lead to a big misunderstanding before they figure it out.
Well, it really depends on the context of the fanfiction. If it's a water - based scenario, Percy would likely have the upper hand because of his control over water. But if it's a more combat - based situation on land where Jason can utilize his wind and lightning powers effectively, he could be the winner.