>>Whether or not the raw numbers correspond 1:1 to actual calories doesn't really matter. What matters is that you adjust your caloric intake based on whether you are gaining or losing weight, and which direction you need to be moving in. Even though the relative amounts aren't necessarily exactly correct, it gives you a basis for adjustment.
But that's the point: you cannot make accurate adjustments unless you also keep track of the type of food you eat (cooked, processed, raw, etc.). Because you have no way of knowing whether you gained weight due to taking too many calories, or because the food you ate last week was processed and cooked.