Go back to school, mate. When you are operating a mix of Copenhagen-Stockholm/Oslo, Copenhagen-London/Frankfurt, Copenhagen-Rome/Malaga, Copenhagen-New York/Bangkok, a single 'cost per seat' measure means nothing, zilch, the same way as if you are operating a mix of Dubai-Bahrain, Dubai-Islamabad, Dubai-London and Dubai-Sao Paulo.
But hey, what do I know of modern airline economics? I date from the time when SAS flew a DC-7 shuttle between Copenhagen and Malmo.