I have lived in both North America and Europe and had several friends who have married Brazilians and Philippinos.
Once upon a time I also thought that North American women had their heads up their assess. I used to think that women from different parts of the world were much different in terms of attitude. But after enough relationship experiences, I realize (at least based on my experience) that people are people are people. You have some sweet honest women, and you also have some evil heartless ones. Then you have many that fit somewhere in between.
If you asked me, the attitude problem some women have stems from the fact that we've all been totally mind-fucked and bullshitted as a society by the Political Correctness plot. Men and women have almost reversed roles. Alot of men now have a much harder time playing their traditional roles and are becoming confused. Likewise with women. If men try to play their genetic natural role, they are now looked at as ogres or Neanderthals by the mainstream. It is a joke. I am not saying women should stay at home and mind the house, but something is definitely fucked up today. Like I said I don't know where the proper balance should be, but men have more testosterone and women have more estrogen and these all effect behavior for NATURAL REASONS. There are natural laws which dictate women can give birth and men are physically stronger. The Politically Correct/Feminist movement has totally blurred the truth.
All that being said, COSMETICALLY SPEAKING, I have found European women MUCH leaner on average. Why?? They eat way less chemical/processed shit, and and are much more active in their daily lives. To me, that is no secret. The stats of American obesity don't lie either. Politically Correct or not, I think the "average" woman in Europe would be considered "smoking hot" in North America.