Well, it's sorta along the lines that you have:
- a "first tier" of well-trained, well-equipped militaries (Egypt, South Africa, Algeria, maybe Lybia)
- a "second tier" that gets outside help and pretty much has no indigenous defence industry (Nigeria, Kenya, Ethiopia, Eritrea, Morocco, maybe Angola and a few others)
- also a "third tier" that while keeping semi-modern forces that "could be better" (Djibouti, Gabon, Sudan, Mauretania, Madagascar, Uganda)
- and then there's the vast rest, 20-30 other African nations.
In that context, Kenya is relatively strong
Sure, Egypt probably has the strongest force throughout Africa, even including South Africa. But, if you look at it in an African context, Egypt pretty much has zero involvement. Except when it comes to water as a resource that they want. Lybia and Algeria, in contrast, are far more involved in "African Matters".