Assume that u r an investment bank. If you got 2 candidates whose qualifications are the same, but one got Harvard MBA, one got an MBA from HK, out of 100 times, how many times would you hire the one with HK MBA??
Assume that you got admission from one ivy league US school and a HK school, out of 100 times, how many times would you or anyone go to the one in HK? even considering the location and costs?
then you got the answer to your questions.
BTW, MBA only adds marginal value to equity research positions. They require industry experience and CPA, which you already got.