And, theoretically there’s no reason you couldn’t learn to be as good as they are. It would likely take a great deal of time and dedication, which you may not have, or may not want to spend on such a pursuit. But in theory, it is entirely possible.
This is just not true. I have read through many, many psych-ed reports in my decades as a teacher, as well as doing a required minor in psychology with a focus on adolescent development. It is just not true that brains are all an equal tabula rasa with identical capacities. And the assumption that it is true has done a lot of damage to a lot of people. I know this is not your intent, but the notion that "all men are created equal" should not be interpreted to mean that all humans are the same.
People have different capacities. That is not debatable, that is a fact about human brains. And bodies. As a teacher, it is my job to help people maximize their capacity, and an important part of that (and the whole point of a psych-ed assessment) is helping them identify strengths that they can strive to maximize, and weaknesses that they can strive to minimize.
A person very close to me tests in the 98th percentile for verbal learning, but in the bottom 5 percentile for spatial/abstract reasoning, particularly in fields like mathematical theory. They are never going to be a mathematician, no matter how much work they put in, and it would be a miserable waste of their time and potential to try to force it.
In fact, this is what standardized education has done for generations of trying to jam all kind of learning "shapes" into a few simple boxes, and it has done immeasurable harm to generations of learners by convincing millions of brilliant people that they are stupid or can't learn, because their strengths were not valued at school, and their weaknesses were the benchmark.
This is not theory, or metaphysics. There are miles of research on learning and cognition. Each person is unique, and should be treated as such. That's the only way that they will thrive, and our society will reap the benefits.
"Time and dedication" are invaluable. But they are not all that matter. Every single person has unique capacities.
Edit: also, think about the implications of the statement that "theoretically there’s no reason you couldn’t learn to be as good as they are." In effect, this is saying that if I'm not Einstein,
it's because I'm not trying hard enough. And it is this attitude that has hurt so many students for so long. I have plenty of students who work their butt off for a "C" on their Theory of Knowledge essay, and others who earn an "A" with a fraction of that effort.