Notokung,
As far as students from South East Asia, I think you will be competing mostly with Thai students (sorry, I looked at your profile). I am from Thailand myself and based on other schools' info sessions that I have attended, there are more applicants applying this year than last year, which is consistent with the trend in GMAT test-takers' volume. So in general you can expect more competition this year.
I am not applying for UCLA, at least right now, but I remember seeing a brochure from Anderson. I think it accepts quite a number of students from Chula... not sure if you graduated from there. If I remember correctly, Chula was #4 on the most represented universities list. This probably doesn't mean much since it could change this year.
If you really want to get a feel of how competitive the Thai applicant pool is this year, talk to a current Anderson student. These students especially the ones that hold info sessions will know how much interests are there this year compared to last year's.
Not sure if this answers your question but I hope it helps.