Prometheus is designed around metric centralization and running a scraper at some interval (every 15s). Netdata was originally focused on running on a single node and collecting at small intervals. Centralizing that data every second is a separate task, and you could avoid it with Netdata simply by viewing Netdata on the node in question. Netdata can also be configured to stream data to a central node.

The centralized pull architecture of Prometheus does not lend itself towards small interval updates or towards resiliency (you actually need to run 2 Prometheus and double scrape for that).