I was very surprised and confused when Ethereum fell to third place. I could not expect that Ripple, which is centralized currency could beat it (OK, temporary, but we saw it). Hope, nothing like this will happen.
Ripple maybe centralized but it has strong investors behind it and many people believe in ripple blockchain technology. I think it was not supposed to overtake ethereum in terms of pricing and market capitalization but that did not mean is not ahead of others decentralized cryptocurrencies.