Bitcoin will always be superior to any other altcoin ( other cryptocurrencies are called altcoins because bitcoin si the main one and other are alternatives for it , you can't take that from bitcoin ! ) , in addition the value per coin is already going crazy ( currently 18820$ per coin ) compared to Eth which just hit the 600$ mark . It'll be impossible for any other currency to outrun bitcoin especially for those who aren't supply capped so bitcoin will forever remain the top 1 .