We should not generalize and compare these two projects due to the level of the project and the possibility of the market. We can say that both are successful but will not surpass Bitcoin in the valuation aspect. In general we can be optimistic in saying that both are successful with the development of the projects and what matters in the end is the well being of the internet and the supporters.
Some people always comparing these two project. Why compare if both has its own platform and has own advantages to the users. That’s true, in th end those users will be the ones to decide in which project they will be involved. I’m on ethereum as it has many who truly support this project and I’m positive about it's future.