I think that these two coins are difficult to compare. They have different uses. I expect Ripple to be able to overtake Ethereum again by capitalization.
both of them are in a different project and cannot compare because it will also be different, so what I think is important to understand is that xrp and ethereum have the same interests and also have the potential to continue to grow from capital values
With more and more altcoins into the market, the cryptocurrency network is getting widen. Ethereum being the best in the market will has contributed to lots and lots of projects through its smart contract platform. By now it is good to invest on ethereum as well on some good trading volume altcoins as the bitcoin market is expected to grow at the earliest. Xrp too is good, but this is termed centralized as most users.