If may be true that for undergrads, locals may have more places
but
1) They did not really say how the locals are distributed.
Just look at engineering schools,
2) They did not really say, is it the same situation for post
grads, from what I seen, foreign students make up the main
poplulation for post grads for both masters and PhD.
3) They also did not say what is the situation for research
staff and faculty. Although technical staff are mostly filled by
locals, the same cannot be said about the the research and faculty.
Look at engineerig schools again, most of the staff are
foreigners, I may be biased here but from what I see most
foreign faculty tends to take foreign post-grad students close to
their nationality (PRC-PRC, India-India, etc).
Seriously, why teritary education become like this: Poly,
undergrads - Local. Postgrad/Faculty: Foreigners.