I read this situation many time here in forum comparing bitcoin versus altcoin, it's sound liked you comparing a gold and a bronze!
Bitcoin is always ahead from all cryptocurrencies this is a mother of all and the pioneer coins and the deep onion is a copy cat on bitcoin.
They have really a big difference if you compared this two thing, about profit bitcoin will always win there's no reason behind why people get involved and invested bitcoin than to other coin. Then let say deep onion is a child of bitcoin.