That's weird. Even I didn't know about Samuel Kuffour.
I also think that African players are being made to play as workhorses as teams exploit their stamina/physical prowess. I reckon if you made them play a bit more technical they would. But their training from being near the equator and general prejudice(Toure is as technical as he is power, and his fitness isn't even that great as he's dead after one lung bursting run)
Seidyou Keita was a player who was very technical, same for Toure, you don't play as a regular in the Barca team if you are not.