Something about Nothing

You would never understand what is behind the scenes in Pakistan Cricket. Now look at the latest happening, as the have called back Leg Spinner (also famous for googly) Mushtaq Ahmed. As Nasim Ashraf said : Mushtaq has impressed me a lot with his cricketing knowledge and I think he can be a better choice for the South African tour
Now, what help Mushtaq bring to the South African (fast) wickets what he could no do for Pakistan on the (Slow and Spin-fvaour) Indian wickets ?, what is the point that I am missing here ?