Autism

To my knowledge, that is actually a thing. People with Autism, as well as people with ADHD, tend to be a bit better at some things that people without usually struggle with for one reason or another. Basically just down to differences of how their brain works with vs without Autism/ADHD. And due to those differences being all you've ever known in your experience, it's hard to know what might make something easier for you, as it just comes naturally, while other things might be completely unnatural to you compared to someone without. I can't exactly recall anything specific without doing some searching, but doing so would probably give some answers.

Also, side point but I only thought about it a bit later despite it being your first sentence. Something also common with Autism is that it's significantly easier to tell when someone else has it when you do as well, and vice versa, where people without Autism might not ever even tell unless they're maybe more familiar with it.