Actually I don’t see it relating to denominations at all.
I see it as more relating to the couple’s SERIOUSNESS about their faith.
Those who attend church regularly have a significantly lower divorce rate than those who don’t REGARDLESS of denomination.
That aspect is true, and today we might vote for Pharisees due to moral values, and if divorce rate was the criteria for the right religion, then the the faith of Asian culture would seem to win.
"For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:" (Romans 2:14)
"And shall not uncircumcision which is by nature, if it fulfil the law, judge thee, who by the letter and circumcision dost transgress the law?" (Romans 2:27)
While having many conservative values alone is not what defines true faith, yet having overall contrary values constitutes wrong faith. One can be a conservative without being a Christian, but one cannot be a Christian and not be a conservative in Scriptural conformity in faith and morals.
And while SS is attacked by RCs are promoting immorality, yet the group that is the most commitment to Scripture as literally being the Word of God are the most conservative btwn the two.
Evangelical Protestants are the most politically conservative Christian tradition. Within each tradition, those with literal views of the Bible are more politically conservative than is their tradition overall. Catholics that are Biblical literalists (11.8%) hold more conservative political views than the Catholic population in general does. The Biblical literalist Catholic is as politically conservative as the Biblical literalist who is Evangelical (47.8%) or Mainline Protestant. (11.2%) American Piety in the 21st Century, Baylor Institute for Studies of Religion http://www.baylor.edu/content/services/document.php/33304.pdf