Total Supply is how many currently have been minted. Max Supply is how many *can* be minted assuming it's still allowed. There are also cases where more were minted than what was reported therefore the total supply and revenue is lower than expected. After Anifty closes, minting will be disabled. A more accurate audit can be done then using the blockchain directly. For now the priority is just reviewing the offchain data. Revenue is how much ETH the creator has received from the creation before fees.