Portuguese didn't notice this batle as it likes... mmmm... So many words to ignore the truth. Anyway in 1580 with a dinastic union they pass to be part of Catholic Monarchy for some time but their way to make things was not the same that the spanish, Let speak to Arthur Conan Doyle about the portuguese one of the most ancient of english ally (he said too):
"It was about the time when Oliver Cromwell was at his zenith—in 1652, to be pedantically accurate—that the Dutch made their first lodgment at the Cape of Good Hope. The Portuguese had been there before them, but, repelled by the evil weather, and lured forward by rumours of gold, they had passed the true seat of empire, and had voyaged farther, to settle along the eastern coast. But the Dutchmen at the Cape prospered and grew stronger in that robust climate. They did not penetrate far inland, for they were few in number, and all they wanted was to be found close at hand. But they built themselves houses, and they supplied the Dutch East India Company with food and water, gradually budding off little townlets, Wynberg, Stellenbosch, and pushing their settlements up the long slopes which lead to that great central plateau which extends for 1,500 miles from the edge of the Karoo to the Valley of the Zambesi."
You can find this here, in teh begining of "Chapter I".
The portuguese empire was a too spread out empire composed of coastal factories too weak to defend even for the Catholic Monarchy that always penetrate in lands they discover, by example in Perú, and when the pirates and corsairs come was trained in most of fights to defend the territory. The Portuguese empire could say that was a predator empire since the Catholic Monarchy was a generator empire, one example the first spanish university founded in America 1538 was the University of Santo domingo, here you have the list. And the first university in portuguese languaje was founded in 1912.
Not by the portuguese as you can see.
About the boers they go far to do nothing except get mad by the great spaces of Africa that never understood.