Some people say Ripple is more decentralized than Bitcoin. Don't forget the influence of the Bitcoin miners, whales and companies.
Those people would be idiots.
Unless you can prove the nodes are'nt hosted by ripple themselves, in server environments with VPNs or such, You are foolish to believe that.
I don't know, nor have i read about, anybody hosting a ripple server. Have you? And you can't vote with hashpower on Ripple, because its not based on blockchain cryptography. So yea, its not even a cryptocurrency.
Also, Ripple are the only ones working on their code. They never have to show you all of their code. So at any point they can sneak in something malicious. Or say, increase max supply to x5 over night.