This simply is not true, you can’t poll a large enough sample size to accurately gauge those likely to watch, thus one would base the market on demographics and other variables(climate, other professional sports etc). If you’re trying to say that based on demographics GB or Buffalo has a larger market than LA I don’t know what to tell you.
Marketing departments can only do so much, a lot has to do with the product on the field. You can’t really market a turd sandwich, which is why Russ Brandon was regarded as a marketing genius...until he played grab ass with the wrong assistant.