You're clearly a man (or a woman) of principle! I think you have posted valuable information on this board for anyone out there with inferior PG qualifications. Yes, you're right when you say that they're worth little in the west, but I'm sure that Chinese employers in the field of education generally don't know the difference between good postgraduate qualifications and mediocre ones.
Shucks, I can recall a former colleague of mine teaching in an unfashionable province getting a high salary on account of a one-year postgraduate teaching qualification he had gotten from a college of education after receiving his BA degree from his university. He had managed to convince his Chinese university that his PG teaching qualification was a special qualification that was equivalent to a master's degree, the latter normally requiring two years of postgraduate study. What many Chinese employers don't realize is that in most western countries teachers won't be licensed as teachers with just a university degree if that degree is not a B Ed, namely a Bachelor of Education degree. Hence the need for the one-year PG teaching qualification. My mate said he had sailed through his PG course at college; he said it was a lot of rubbish no good to man nor beast, and that almost all his classmates passed as many local high schools were in dire need of science teachers.
The thing is that in China there are many misfits and con-men with little or no teaching qualifications teaching EFL. It all boils down to supply and demand, and it seems to be getting much easier for westerners aged between 50 and 65 to get teaching jobs in China than it was before.