Zero percent (0%) transaction fee and fast transaction is one feature which Bitcoin can never have.
It an edge possessed by steem and it's sister token sbd over Bitcoin.
Another edge it has over bitcoin is that you can hold it and earn 2% interest per annum, strong wallet, and also you can use steem to power and act like Hive account@berneisander or Hive account@haejin and his cult of followers or just act nicely like Hive account@overkillcoin.
That is not to say that Bitcoin do not possess any edge whatsoever.

Ask me about it and I will answer you.