Keratin
Zahir, I'm curious as to what you have to base your logic on. Because obviously, there's no way to know how difficult a task is to someone internally. Nor is there a way to know what kind of "wiring" is required for a task as endlessly complex as making art. How would it be possible to know that someones "wiring" is superior to someone else at anything?
Mostly observation.
Different people find different things to be "easy". I'm not sure that it's all down to training and education. Otherwise a classful of kids all receiving the same lessons would all be equally good at arithmetic. This demonstrably isn't the case - some kids juggle numbers with ease, others struggle to add up basic sums. Likewise some kids read books fluidly, others have to sound out every word. There's plentiful literature about people who are left-brained or right-brained, favouring either intuitive or logical thinking processes.
This, to me, indicates that some people's brains work slightly differently to others - maybe favouring spatial recognition type skills, maybe favouring verbal or linguistic type skills, maybe favouring auditory type skills. If your brain favours a particular kind of processing, you're liable to be better at skills which rely on that kind of processing.
However, these favoured types of thinking are mere
potential until the person has been trained to use them properly. Someone with a good auditory processing brain won't become a brilliant composer until they're taught how to read and write music or play an instrument. Someone with a good visual processing brain won't become a brilliant artist until they're taught how to handle various media, and how stuff like composition and colour theory work. They might be pretty good with no training, but they won't be as good as they could be.
Two kids who've never picked up a crayon before might start out drawing similarly comical pictures, but the kid with the visual processing brain will find it easier to grasp, and thus improve more rapidly than the other kid does.