nah, see
i've fought like five 6 year olds at once before. they're not that smart. when you kill the first one, the rest will run away.
they don't run at you in groups, they come 1, 2 at a time usually. you just knock them down, and their friends will stand back. they don't like jumping over fallen comrades, so they wait til their friend gets back up and moves out of the way before attacking.
even then, 6 year olds are pretty fucking weak. they could probably pound on you all day without doing much besides making you sore.