Hey, I'm not trying to be difficult, sorry maybe I was not clear.
I didn't say it was impossible I said it was difficult, and to clarify, if you maintain a calorie deficit but you don't change the foods you are eating it will just be a struggle.
This is my subjective opinion though, having tried it. I'm saying from personal experience, if you cut carbs and sugar, and eat protein and fat, you will lose fat significantly faster. When I did ate like this I didn't bother counting calories or worrying about maintaining a deficit.
Big Macs don't count as 'high fat'. I don't think anyone should eat big macs really. My diet usually consisted of eggs, cheese, sour cream, bacon, turkey, guac. I'd imagine the omeletes I made were 2000 calories but I never tried to add it up. Fat is a good source of energy and if you do cut carbs you do need the energy to be made up with something else.
I tried this from reading through 4 hour body and alpha male diet although what I did was more like an atkins diet (which I've never actually read). It was kind of bits and pieces of these, but the common thread being carbs are bad, sugar is bad.
I'm sure people can find success with different ways but I've tried a lot of different things and this worked better than anything else.