[DanBC]

> I'm not being pedantic about the mechanism. I'm being reasonable about the fact that the method most people have to figure out whether what they have is going to be successful is useless (IE if they can't determine how many calories they eat/burn, they can't possibly change the numbers :P)

The problem isn't with nutritional labels of varying accuracy, but with people under-estimating the calories per portion (without reading the label) and who serve enormous portions.