I have been wondering this for a while but in Homestuck I am pretty sure someone said skaia picks players class and/or aspects in order to challenge them or something along those lines. Which is why rose is a seer of light. So wouldn't the quiz you made be wrong since whatever class you get could be the complete opposite of what skaia would assign?

If the Class and Aspect Challenge the people with the Classpects, it’s only because they’re not mature enough or haven’t grown and are reluctant or held back from their True Classpect. Even while tearing apart SBURB and being all Grimdarky, the way Rose just seeks to find how SBURB works and information about the brightest object in the Furthest Ring is so Seer of Light it hurts. The Quests on the Lands MAY challenge the Players, but their Roles fit the most healthy way of being for them.