The Short Version
Controlled metabolic-ward studies consistently show that when calories are held equal, eliminating carbohydrates does not produce superior fat loss — and in some cases, fat restriction outperforms carbohydrate restriction. While low-carb diets can aid weight loss in real-world settings, this effect is largely driven by spontaneous calorie reduction through appetite suppression, not a calorie-independent mechanism. The claim's absolute framing — "regardless of total caloric intake" — contradicts the established scientific principle that a caloric deficit is required for fat loss.