i will also say that ketogenic diets are hard and impractical for the vast majority of people, i would only use them in metabolic syndrome x, or if massive fat loss is needed in a short amount of time. Most studies showed a faster weight loss initially but most diets tended to even out over time, calories are the main ingredient in fat loss no doubt.
i finally agree with you on something necrosis

.
disgusted you are wrong, plain and simple.
In a metabolic ward setting there is no fat loss advantage in high fat/low carbs over low fat/high carbs. There is a very very slight repartitioning effect towards more muscle, but we are talking not even statistically significant levels.
basically calories are king between carbs and fats when dieting.
if people you worked with started losing weight on the same calories then they overestimated their original calorie intake or are eating less calories on the high fat diet due to the increased feeling of fullness.