Which diet is best?

The Los Angeles Times reports on a study of three different diets.

The first diet was a traditional low-fat diet consisting of 60% carbohydrates, 20% fat and 20% protein.

The second diet in the study was a low glycemic index diet with 40% carbs, 40% fat and 20% protein.

The last diet was a very low-carbohydrate diet similar to the Atkins diet consisting of 10% carbohydrates, 60% fat and 30% protein.

What was the best diet for maintaining the weight loss?

Proportion of carbohydrates, protein and fat determines success