Comments of chapter undefined of Hogwarts Chronicles: The Marauders' Era

That sounds forced. Occlumency is a skill like Legilimency. That means that there is proficiency involved. To say that Dumbledore legilimency can't break past a child occlumency shield, even if he's a natural talent in it...seems exaggerated. It's like saying he's a natural master of the disarming charm, with gives him a proficiency higher than Dumbledore.