And the divorce rate among Catholics is how much better than average?
Like secular Jews, there are "catholics" that never go to Mass, never read the Bible, never practice any religion, but still self-identify as "catholic" because their parents, grandparents, etc. were Catholic. Like secular Jews, they worship the State.
They skew the heck out of the statistics. If your survey asks the simple question "how many times have you attended Mass in the last year?" and count only the folks that go twice a month or more, you get a whole different picture. Not only on divorce, but on support for Obama, Obamacare, etc.
I think it’s about 6% better for the general population of people who say they are Catholic. It’s a lot better for those who are observant Catholics, and for Catholics who are observant and do natural family planning that harmonizes with Church teaching, the “stay-married” rate is above 95%.
(I took NFP classes some years ago, and I think those were the statistics I was given.)