Jean, When the DIETFIT results were announced, the LC community (and Gary Taubes) were upset it "wasn’t really all that LOW carb", the study wasn’t done correctly, long list of complaints, etc…sure I probably said the same! Only joined the nutrient density and PE folks in 2020, while you were leading the way here.

This is the article we should have read in 2018. WHY the results were the same, why both low carb and low fat approaches can work for weight loss.

As Dr Naiman says, If the Carbohydrate-Insulin Model is true, then its proponents need to explain all the millions of "black swans" around the world who maintain a healthy weight on a low fat diet. 😆. They are so entrenched in low carb, they can’t accept a compromise to increase protein and lower energy may work better than either of the extremes.

Another good analysis of this topic beyond weight loss.
Low-Carb vs Low-Fat: What’s Best for Weight Loss, Satiety, Nutrient Density, and Long-Term Adherence?
https://optimisingnutrition.com/low-carb-vs-low-fat/