The first time I ever took a Myers-Briggs assessment was on paper and every question was A or B. There was one where I was a perfect 50/50 split and could NOT choose a preference for either, so I scored it as .5 for each.

That .5 difference gave me an equal score for introvert and extrovert.

Since then I’ve taken a more professional assessment at work, and it shows how strongly I fit into the category. Like you, they were nearly all ~47-53% between the two.

Some other assessments have been intriguing imo, but Myers-Briggs has never suited me because of their dichotomy BS.