I got an answer!!! i was talking to someone in the gym today about this and the sent me an email...
ready...
'Although a given ammount of carbohydrate and protein may have the same calorific value consider the fact that in terms of energy, protein is the most 'calorically expensive' nutrient. If you ate 100 calories of protein for instance, after the digestion process is complete, you are only really going to be 'netting' about 75 calories. With carbohydrates you net around 90 calories (per 100 consumed) and with fat, this is even higher at 97 calories.
Your trying to have less carbs to force the body to use fat as its energy source , once you have reached the ammount of protein that can be utilised if you still havent got enough calories in the diet and you have used my earlier recomendation of 1g of carbs per pound of body weight (cutting and on a training day ) then the balance i would make up with some extra fats these are not only calorie dense so you wont need a lot but also as your body is being deprived of carbs so its more likely get used as fuel.
An excess of protein isnt the best but is less likely to be stored as fat , i know your on a low carb diet so it wont be an excess but dont forget were trying to force the body to use fat as its energy source so adding in more carbs will stop that , this c and p below explains it a little in terms of excess protein .
Excess protein is more likely to be dispelled from the body than turned to fat. Protein is 58% likely to be converted to glucose, which can be stored as fat. Fats are 10% likely; on the other hand, carbs are 100% likely 100% of the time. This is (once maintenance calories are reached and glycogen stores are full for all of them). It is much better to err a bit on the high side of protein than not enough. Another thing about protein is its thermic quality that is it needs to be broken down into amino acids on digestion, thus creating the effect mentioned and actually using some calories. Many of your good vegetables also have this quality, and some fruits.
Carbs are energy. Carb calories are used to maintain your body weight/build muscle or can be burned off. If there is any extra left over at the end of the day, the excess will be stored as future energy, i.e. fat.'
Does this seem reasonable? I'm not quite sure what to make of it.