It is difficult to answer this question, since both these cryptos have their strengths and weaknesses. They both seem to compete to some extent with Ethereum, but none of them is good enough to surpass it at this moment. In the future, perhaps, but not now. After all, no one can know what will happen in a few years, and which of these coins will appear at the top. The only thing we can be sure of is that they do not lose their potential, and both do their best to develop their strengths and provide better service. Everything else depends on investors and their own preferences.