Nothing wrong with it,those coins that are listed in the website are the top coins which has reached the standard marketcap thats needed so that the coin itself will be automatically listed to the coinmarketcap,and those coins are ranked based on the total marketcap of each coins,so those projects that were listed are surely got the minimum requirement of the coinmarketcap.
The coins that are on CoinMarketCap is not not placed in there because of their marketcap, they get listed there once they get a certain amount of volume traded per day ($10,000).