One poll doesn't exactly hold up to scientific scrutiny. And further, there are bound to be lurking variables and confounding variables. If this study were to group Norwegian men in one homogeneous group, then the conclusions are flawed as different women have different requirements for husbands.
So then Norwegian Bachelor Farmers of Lake Wobegon should make the best husbands, but I guess they don't. I am half Viking, and I make a great husband, so says me, but I don't believe in marriage, and have never indulged in it, although I have lived with woman all my life. And have had none of the problems therein associated with marriage.