I think this one would go to the little girl. It would have to be a classic case of the big, slow pedo getting worn out as the little girl ducks and weaves, dodging the pedo and wearing him out.
I think the pedo would land a few big blows, maybe a denim-cock slap, possibly a backhand as well.
The little girl would take on swift kicks to his feet, which would help slow down the pedo. In a last ditch effort, the pedo would go for his signature "Aviator flash" trying to blind the girl momentarily.
The match would soon come to a conclusion, when the little child would unleash it's "temper tantrum attack" and then it's all over, good nice mr pedo!
Loli wins by KO, with 8 seconds to spare.