@Wolfman - I totally agree with you. I am also a Filipino and I don't care how much my Western counterparts are making. I am happy enough that I am making more than what I could have been making back home. I accepted my salary because I felt that it was right for me and I believe that same goes with all other expats regardless of nationality. If not, then why accept a job after all.

@tallg - You are right. The survey should have included the percentage increase of what you should have been earning back home as compared to what you are earning now. As you have said, Brits, Americans and other Westerns earn around 1.6 of their salary back home. Personally, I am earning around 5 to 10 times of my salary back home. For others, they are just happy that they even have a job here which they don't have back home. If you compare 1.6 and 5, it will show that Asians are even luckier. If only all of us will look at the brighter side of light then all of us will be happy.
Also, will a Western come here for..let say 2,000USD??? Of course not because they can earn it back home. Why go through all of the hassles. But for us, 2,000USD will be more than acceptable.

In addition, they should have clustered their survey to various levels (comparing apples to apples and not apples to oranges)....The wide difference can also be attributed to this factor. Majority of Western Expatriates are employed on Senior Level Positions (white collared jobs) while a lot of my fellow Asians are employed on non senior (blue collared jobs). If you compare a western and an asian expat with the same level, then you will not see a major difference, at least not as much as the one being reported in the survey.