For me, low carb works like magic and with limited aggravation once past the first week. The problem is, if I never learn to be (sometimes) hungry, it all comes apart when I go off the diet and back to living in the land of infinite crap carbs.
There's a huge difference between "a bit hungry" and actually properly hungry. Most people with weight problems probably never let themselves feel more than peckish, and so their perception of hunger adjusts to amplify that feeling. When I'm below my target weight (sitting at a fairly low body fat percentage) and I try to maintain a calorie deficit, the hunger I start feeling is insanely more intense than when I'm a bit chubby and losing weight.
Overeating without white carbs just feels uncomfortable and I rarely do it. The rush I get from pizza or fries (which I hadn’t identified until I stopped) masks that discomfort.
If you’re on a calorie controlled diet, then calories in calories out holds. But most speciality diets (I’m on something pretty similar to slow carb) are targeting adherence, a factor that’s removed if you’re only measuring calories in and calories out.
Without white carbs I find it much much easier to reduce my calorific intake. To compare my diet with any other — if you’re enforcing the same number of calories — is kind of pointless, as I specifically don’t want to count calories, nor do I want to feel hungry.