The great divorce debate

I've recently read several articles stating the divorce rate is actually way lower than 50 percent, which was previously believed by researchers.
The worst by far, was one about how Christians get divorced less than those who aren't Christians. 
The divorce rate could be lower than 50 percent in general. I have no clue to be honest, other than what is reported in various news outlets. However, the last three bullet points in this "research article" which really bother me, are:
-Most marriages are happy.
-Simple changes make a big difference in most marriage problems.
-Most remarriages succeed.
The first bullet point is the most unrealistic. What measures a happy marriage? 1. Just because people don't get divorced, doesn't mean a marriage is "happy." 2. A lot of people convince themselves they are happy, even though they really aren't. They don't want to give up the dream. I doubt many have even admitted to themselves their marriage is unhappy, let alone claimed it's unhappy on a survey. 3. I don't believe you can even classify a marriage as "happy" or "unhappy." All marriages have good and bad days. Unless, you are in an abusive relationship, your spouse is cheating on you or something along those lines. Then you should get out ASAP.
To the second bullet point, at least the "reporter" said most marriage problems require a simple change. There are lots that don't. If you have a cheating spouse, that's not a simple fix. If you have an abusive spouse (verbally or physically), that's not an easy fix. If you fight about money 75 percent of the time, that is NOT an easy fix. It is not easy to change one's nature, even though it may sound easier than it is. Both my husband and I have flaws. To me, my flaws are not easy to fix. To him, his flaws are not easy to fix. Easy from an outside view, maybe? To those in the marriage, each problem is complicated and not easy. Working together and excepting each others flaws though, can make it easier.
Most remarriages succeed? First of all, when a person gets married the second time, or when two people remarry each other again? Either could be true, but I don't believe there is any accurate way to fully track the data.
It just goes to show many people read the headline and don't really think through the content and pick it apart before posting. Goodbye critical thinking. I guess you are a thing of the past to many people.