That is fascinating. It reminds me of the woman who could see in ultra-violet and only found out she saw the world differently to other people by accident. And this is not entirely off topic, because it is different levels of activity in the different areas of our brains which mean that one writer will struggle with plotting while another will find plotting easy but struggle with inventing characters.
The good news is when it comes to the skills required for writing, the brain can restructure itself. It would be interesting to see the scans of how a brain changes (which areas become more active) as someone becomes a more and more proficient writer.
But as just one session of brain scans cost $3,500, I doubt any aspiring writer could afford it.
But different brain structures is something I've been harping on about for ages. Specifically when people go on about the need to show emotion in one's writing: the claim that everyone (or even the majority) experience and manifest emotion the same way. The truth (proven through loads of experiments) is that people are terrible at reading other's emotions. The chance of correctly guessing how someone if feeling, purely from body language, is 25%; that can rise to 33% if you know the person you are assessing very well.