Agree. Ripple is extremely centralized which means that it could be easily manipulated by its company, banks, and even governments to their own desires. This disadvantage, will allow external entities to freeze assets or funds, close accounts, and even put limitations on how to use the system. On the other hand, decentralized systems such as Ethereum are much better since no single entity controls it, and anyone can freely send/receive Ether, as well as use the underlying ERC-20 tokens without the fear of getting their money frozen by governments or other third parties.

Of course, Ethereum's transactions were rolled back in The DAO hard fork, (which shows that it could easily be reverted due to political interests by governments, etc) but it was only once to protect people's funds. If ETH doesn't implement any future rollbacks, then it would have the benefits described above. In terms of technology, ETH surpasses XRP by a long shot, as it is capable of handling smart contracts that would extend its functionality, unlike XRP which is only used for quick payments with inexpensive fees.

I believe that ETH would continue to increase in traction with ICO support, among others, while XRP would fail as it's centralized and could easily become defeated by governments worldwide. Just my thoughts