Decentralized. A coin that is centralized is just like the fiat, but runs and managed by a private company. Think about ripple, I have ripple in my possession but, the thing is. That xrp is mined, managed and controlled by a single company which I think negates to one of the core value of bitcoin being decentralized. But until now xrp is still in trading platform. There are news about merger, new investors and utilization. But at the end, that coin is not for the people, it is create by business people for business purposes. I still believe that an open source project and decentralized and managed by all the people coin is much more greater.