Well, it's not quite that simple. It's not the sugars bit that is confusing, but the fibre and 'sugar alcohols' (whatever they are) that are handled differently by different manufacturers, mainly from the USA. There, they like to refer to nett carbohydrates, ie taking the fibre off, but we are more circumspect in the UK. Problem is, it makes it very difficult to understand the nutrition labels a lot of the time. A simple rule is: multiply the fat in grams by 9 and the carbs and proteins by 4, and you should end up with the energy in kcal. If you don't, it's a sign that things are not as straightforward as they appear.