They're not painted in such detail as Ramses;which the Egyptians did with EVERYONE. But when you see depictions of Kushytes in their own art, they're painted in detailed just like the Egyptians.What about how they were depicted makes them look "primitive" in your opinion? I'm not saying you're wrong, I'm just saying that to me they don't look primitive, they just look different.
I believe that on average, the Egyptians and Nubians looked similar to each other, but not exactly alike. Do you disagree with that?
Not all Egyptians themselves looked exactly alike, since they were a mixture of many African people imo.
I disagree slightly considering there was never a "Nubian" and the people south of Egypt were never unified and had their own looks. But that does not change that fact that Egyptians came from the south(Nubia).