Is there any evidence to indicate that Orthodox, as a whole, respect their Church's teachings on sex and marriage any more than Catholics do?
"Is there any evidence to indicate that Orthodox, as a whole, respect their Church's teachings on sex and marriage any more than Catholics do?"
In some areas, yes. Divorce rates are low, in some places very low, by comparison for example. Certain ethnic groups have low abortion rates, Arab and American Orthodox people among them. In Eastern Europe and Greece, though, abortion rates are scandalous.