angolanexpat
In an overbooking situation status with that airline will always help. Status with an alliance or partner airline I guess would be next in the pecking order.
In Africa there are not that many airlines or inter Africa routes. The airlines tend to be government owned and operate on non commercial basis. Flying to Europe is more important for the plutocrats - politicians – bureaucracy.
From post 2
Airlines tend to treat members of their own frequent flyer program better than members of other frequent flyer programs. If you fly one of these airlines, it is recommended that you choose that airline. As a very general rule, it's best to maintain status on the airline you mostly fly