EOS sacrifices Decentralisation to increase capacity and speed over Ethereum. Only a limited number of nodes participate in the mining process. Hence the latency is limited and the Blocks are synchronised quickly. The nodes are selected by the process of voting. (DPoS - Delegated Proof of Stake).

Ethereum is currently using Proof of Work method and soon planning to move towards full Proof of Stake. Ethereum Network will continue to be decentralised and there will be no limitation to the number of nodes that can participate in the confirmation process.