First thing I would like to know is where do these 2,700 people who responded to this survey live. Do they live in NYC, LA, Northern Jersey, or do they live in the south or mid-west? If they live anywhere in the northeast or west coast then I can see how this might be true since living expenses are often greater then salaries. A person making $100,000 in NYC is A LOT worse off then someone making the same salary in South Carolina for example.
Another issue I see, as many have already mentioned, is personal habits of these people. I can tell you from personal example of my own. I had a few friends, liberals, hence the emphasis on HAD, with similar salaries as my wife and I that would eat at expensive restaurants at least 3 times a week while my wife and I shopped for food at shoprite and used coupons. Needless to say they were always crying how they always had money problems and couldn't even get a mortgage because their credit was crap. While my wife and I both have new cars, fully paid off, and a mortgage that is almost paid off, and perfect credit on top of that.
So just because 2,700 people have trouble living paycheck to paycheck, that is absolutely no indication of the economy as a whole.
As a matter of fact, I do believe that this is another attempt by the libs to paint a bad picture of the economy.