NORTHERNMONKEY . . . well, no, I can't . . . but then again I'm not a rocket engine built to precise specifications. I'm just a fairly confused student of food-ology who can't tie all the loose ends together.
But generally . . . yeah . . . you can pretty much estimate what your total food intake is and you can pretty much estimate your basal rate and activity energy requirements.
And my contention is that as long as you are well under that estimated daily requirement, you will lose weight regardless of what macronutrient combination you eat.
I don't know Mark's position on this but I know that both the Doctor's Eades and Dr Atkins have all conceded that low carbing does not mean gluttony . . . eat more fat and protein than you need and you will get fat.