Bitcoin and deep onion is far different
bitcoin has a higher demand and it can be used in any transactions through out the world,  and it has been used by businessmen for payments in their online or offline shops, on the other hand it is only an altcoin and is not as popular as bitcoin, and altcoins can never surpass the bitcoin.  People get used to use the bitcoin because it is fast currency/easy used for payment, secured and decentralized.