Low Miles ??

When looking at vehicles, on craigslist, and other places - I often see, for example, a 15 year old vehicle, with 135,000 miles, listed as "low miles". -- Sellers seem to judge "Low Miles," by the number of miles per year. -- So by that philosophy, a 1965 car with 250,000 miles is a "Low Miles" car. -- I guess not. -- Comments ???