I don't understand anything about the pinoys, so I'm not able to provide a comparison.
Do Thais lie to each other ? Of course. Anything that will help them 'save face' they will lie without batting an eyelid.
I know some smart ass will come in and say : "You mean Chinese don't lie ?"
When Chinese lie, they know it's wrong. When Thais lie, they don't think it's wrong. That is the difference in culture. Chinese understand 羞恥之心,Thais simply don't have this phrase in their idioms and proverbs. Only recently I asked my manager to offer me the equivalent of 人窮志不窮 in Thai, the manager called in two assistant managers (all University graduates). None could come up with a similar phrase in Thai. It's simply not in their dictionary !
Okay, not anymore Thai bashing in this thread.