Here's a link to the study (which, by the way, was unnecessarily difficult to find): http://www.thelancet.com/journals/lancet/article/PIIS0140-67... What a sensationalist and wrong headline. All it says is that "Total fat and saturated and unsaturated fats were not significantly associated with risk of myocardial infarction or cardiovascular disease mortality." So whether you have low or high fat in your diet, you co…
This doesn't contadict any of your points here, but: my understanding is that excess dietary protein is broken down into glucose via gluconeogenesis, in which case I suspect that the high-protein and high-carbohydrate diets wouldn't have significantly different results.