[Caveat: I am no philosopher, nor have I done any research on this. These are just a few meandering thoughts and broad generalizations brought on by boredom while riding the London to Oxford train.]
The biggest difference between Africans and Westerners might be in how we define value.
A Westerner sees a tree and loves it for it’s aesthetic beauty.
An African sees a tree and loves it for it’s practical uses; for shade, or how much it can be sold for.
This comes out in small and large ways. Many times the differences and definitions for why we do things differently are difficult to notice, they’re nuanced, leaving only a vague sense of confusion of why a certain decision was reached by a person from the other culture. At other times the cultures stand gawking at one another wondering which planet the other came from.
This isn’t to say that Westerners can’t see practical uses or that Africans are unable to appreciate aesthetics. No, it means that a different starting point on decision making can create a wide number of outcomes, many of them widely divergent to our own cultural world view.