We have had 2 from So Africa, the first one thought she was a great Dr, not so great. The next one actually is very good, but he doesn't have the huge ego as the woman Dr. He has a perfect rating on Rate Your Doctor, her's not so good.
I've encountered a few South African doctors over the years, found them much like most others. "Rate your M.D." is a very good site, but you have to remember you are just getting layman's opinions. Some people want someone to hold their hand for them 24-7, so you don't expect glowing praises from people who tend to "swing the lead" and the doctor picks up on it.