I do see what you mean. However, I think you're trying to be too accurate in prediciting how many calories you will burn. These calculations can only get your a "guesstimate" because everyone's body is a bit different. Start with what you think is a reasonble amount of calories for your goals and track your results using body fat % and body weight. Adjust your diet according to your results after each week (or 2) of sticking to your meal plan. This will allow you to "hone in" on the right amount of cals for your body at the time.

It's the results that matter not the predictions.

IW