The main advantages of Ethereum over Bitcoin is that people in control are qualified and expected to not screw everything, unlike Core people.
You must be oblivious to the development crisis's and mistakes in Ethereum and the flight of developers from that project.
I think its main advantage could be that the founder of the project is still there and functions as a "natural consensus". Also its good that his identity is known.
Apart from that ETH could get the same problems and civilwars that Bitcoin is experiencing.
That's a true advantage to got a leader indeed... It prevents any divisions of point of view or of development as long as he's not making too crazy decisions.