The text compares the scalability and ease of setting up clusters between two NoSQL databases: MongoDB and Couchbase. It highlights the complexity of setting up a MongoDB cluster, which involves configuring sharding and replication across multiple nodes using a master-slave architecture, often leading to cumbersome and error-prone processes. In contrast, Couchbase offers a more streamlined approach due to its peer-to-peer design, where all nodes are uniform and inherently provide data, indexing, and query services without requiring specialized configurations. The narrative emphasizes that Couchbase simplifies the scaling process, which is a significant advantage over MongoDB's more intricate setup, making it appealing for users seeking efficient cluster management. Additionally, the author mentions resources for those interested in transitioning from MongoDB to Couchbase and provides insights into further exploring Couchbase's capabilities.