Ok the following scenario is perhaps unlikley, but lets just say it happens.
After WWI was won by the CP, the German Empire and a federalized Austria-Hungary get more colonies in Africa.
The Map would be like this:
http://imageshack.us/photo/my-images/267/afrikaj.jpg/
Anyway, Austria rather views their African territories as Oversea-States and treats the Africans equal. They try to give Africa a good infrastructure aswell as Education.
In Mittelafrika, the situation is not as good, especially because there are money issues, because Mittelafrika is so big and Wilhlem II wasn't so fond of equallity i think.
Between 1955-1965 Mittelafrika gets dissolved.
Austrian-Africa gets independent between 1980-1985, they manage to keep them longer because they were treaten quite good and enjoyed a good living standard.