Jean Grey has the Phoenix Force within her and one of the coolest costumes in all of Marvel. That being said, she isn’t quite ready to take on someone like Gohan. Gohan has his Mystic Form and at his peak he is almost as strong as Goku. Jean Grey will get completely overwhelmed by Gohan and his fierce attacks like the Masenko. He can take the strongest flames that Jean can throw out and that’s only if he wants to get burned. Gohan has the speed to dodge all of her attacks with ease anyway so he has the massive edge here. Gohan wins.