Not sure if I agree completly, but since you can win in under 10 moves simply focusing on an attack in the king I know what he means (wasn't quite a fools mate, but couldn't protect the Kings side)
I think that a 12 year old would play Mord reckless and would make more obvious mistakes. I think this is at the level oft a self taught novice that only played against another self taught novice (funny enough I was thinking of when I player chess against my friends when I was 12...) good times