Example of non sense experimental protocols in the debate about fat and sugar

http://www.jci.org/articles/view/36714
http://ajpendo.physiology.org/content/296/5/E1003

These two papers show that experimental protocols are of paramount importance in studies about the differential effect of fat and sugar.
Instead of comparing high-fat versus hi carbohydrate diet they indeed compared high fat diet with normal carb diet vs low-fat high carb diet.
The result is that insulin is higher in the so-called high fat diet because carb are not restricted.
All the interpretations are are irrelevant because they don't try a high fat low carb diet.