Totally agree!
I'm italian, but lived in Cabo Verde, Finland, worked a while in Luxembourg and Germany, and lived almost 2 years in Hong Kong (traveling frequently to China, Thailand and Singapore) before moving to South Africa.
I can definitely back your theories, in Asia women have a different mindset, different cultural background and expectations, and are also used to different kind of man (the typical asian stereotype is way different from the western).
I noticed that rather than the tricks taught by the game, that best apply to US, and averagely apply in western cultures, it's a lot easier going "natural", mixing some flattering and some points of interest (make yourself interesting to her); tricks usually work after you opened, but surely not negs.
Usually witty/tricky openers like "i bet you bla bla" or "i need an opinion..." don't click, it's way better to simply get close, say "hi! what are you drinking?" and be more direct; especially if you're not asian, they won't care at all what line you approach, as long as you immediately show interest in them, since THEY FEEL EXTREMELY FLATTERED AND OPEN UP IMMEDIATELY IF A WESTERN MAN APPROACHES HER. if, though, that man comes onto her too heavily, they will feel a bit harassed.
This is my experience so far. Have you ever watched "how i met your mother"? It seems hilarious, but Barney's line "Hi, have you met...?" works 99% of the time, so my tip is: go sarge together with a friend or wing, go smooth but direct to the girl, showing her you find her attractive and start a conversation, especially about your job and travels, they love to get to knwo your social status (don't ask me why).
There is a sea of other things to be said, but I am bragging too much
cheers!