Who will survive?
Combatant 1: A little boy.
Age: About 8
Weight: About 55lb
Height: About 55 inches
Strength: Very low
A small, for this example, white male child. Probably still pisses his bed. Combat ability is extremely low.
And now for Combatant 2: Little boy.
Length: 120 inches
Blast Yield: 13-18 Kilotons
A nuclear weapon. Dropped over Hiroshima killing roughly 66,000 people and injuring another 69,000 or so. Estimated long-term death toll of the explosion and related illnesses is around 200,000.
So who would win in a fight? It would be an epic struggle to be sure.