As it turns out, the study doesn't actually prove that low-carb diets lead to greater weight loss compared to low-fat diets. Instead, it shows consuming fewer carbohydrates may increase protein consumption, and something about that combination seems to enhance weight loss -- however, the cause is not yet clear.
For the sake of your New Year's resolution and your waistline, I'm here to tell you not to believe the hype about sugar. It, like everything else, can fit into a balanced diet in moderation. And if you have instituted a resolution to give it up and find yourself on the failing end, there's still hope.