A node using Fiews usually has access to better and more reliable infrastructure than a node operator who's hosting their own Ethereum node.
Do nodes using Fiews fulfill requests faster?
In many cases, yes! Due to the fact that this is a paid service and we only accept the method calls required by a Chainlink node, we are able to provide more performant resources and our transaction pool is far less congested than most free services. Additionally, we can provide granular control over the number of Chainlink node operators on a particular Ethereum node and redistribute load based on a number of metrics.