I do not own Harry Potter
Hogwarts
The Headmaster of Hogwarts of Witchcraft and Wizardry sat behind a large desk in his office looking over papers for the up and coming Wizengamot session. The Headmaster's name is Albus Wulfric Brian Dumbledore (who has too many titles)not knowing what happened that evening until the Floo of the green flames a couple holding a child each looking pallid with relief and man and the woman were former students and the best fighters of the Order of the Phoenix which he leads. Both brought the twin boys to him and told him what happened as the night started to catch up with the woman holding Harry the black haired infant and James who held Charles the red headed twin. They asked him the most important question"Which of twins defeated Voldemort?"
The old man who looked drain and weary after hearing about the event of the night. So to make sure he chooses the right child he ran several test. The first test is to see leftover dark magic which showed both boys having traces of dark magic use on them(Harry a little more than Charles).The second test Showed the how much magic was in their magical core which Harry had a little magic in him the Charles. He concluded that Charles used his Magic to protect his brother.
He also sees the mark on Charles cheek but doesn't see Harry's as it is hidden under his thick mop of black hair. Then finally he looks at the Potter's and says the words he will regret 13 years later. "Charles Vanquished Voldemort as the evidence shows with the V on cheek that Voldemort marked him as a equal. Also he had low reserves in his core which shows he used magic to protect his brother." He omits the evidence of Dark magic trace found on both boys.
The Two parents looked at the younger child in pride in their eyes while both twins slept on without knowing what will happen later.