Did you look at that link? Excerpt:
> If you are a PRC citizen (and most HK people are), you can get a Mainland travel permit, then you can work and settle in Mainland China without restrictions. Getting a Mainland travel permit is a routine matter, and almost everyone in Hong Kong can get one.
This is completely, entirely different from a Palestinian living in the West Bank. It is _not_ a routine matter for them to get a permit to work and settle in Israel proper without restrictions; it is extremely difficult to do so.
It's worth pointing out the unequal nature of the restrictions - with Israel/Palestine, members of the dominant power have the advantage over the weaker power (Palestine). Israeli settlers are able to move into the Palestinian territories much more easily than Palestinians are able to move to Israel (and Israeli settlements and annexation of the Palestinian territories exist, while the opposite is nonexistent for the Palestinians). This is most definitely not the case in China - Mainlanders aren't given preferential treatment over Hong Kong locals.
It's also not correct to think about them as separate entities like Israel and Palestine, since Hong Kong is represented in the National People's Congress. Palestinians do not get representatives in the Israeli Knesset, as HK citizens get in the NPC. The PLA is supposed to protect HK citizens, the IDF is not there to protect Palestinians - in fact, one of the goals of the IDF is to fight against the Palestinians. The goal of the PRC is to integrate HK into the mainland proper, the goal of Israel is to exclude the Palestinians from Israel. The government of HK is a local PRC government, whereas the Palestinian governments are separate entities from the Israeli government. There has been wars fought between Israel and Palestine, and blockades put up - nothing like this has happened between PRC and HK.
This is kind of like saying "I cut my hand cooking the other day; what's the difference between that and surgery." The two situations aren't even remotely similar.