[ Rap and Hip-Hop ] Open Question : why are there some people who think that just because you sale the most records means you are the best?

money does not make you the best, album sales do not make you the best. that just means you have a good marketing technique. some people put these music artist on a grand pedestal because they sold more albums. this boy told me that Nelly was better than Nas because he sold more albums, that means he is better than Nas because more people wanted to hear him. i mean do you really think that Nelly is better than Nas? i am not saying it to be mean, i am just giving an example. can someone please give me an insight on this? thank you :)