(1) Israel does not want to maintain security control within the pockets that the PA/Fatah have autonomy in, and does so as little as possible, and is fine with PA/Fatah having their own police, whereas the Apartheid government of South Africa did not allow black Africans to have their own police, and (2) the Apartheid government of South African did not allow black Africans to vote, whereas Israel doesn't care and if the PA/Fatah want to vote, it's up to the PA/Fatah. These are ginormous differences.