Dot voting is a quick, democratic way to prioritize features or tasks based on team consensus. While it’s helpful for making decisions quickly and gauging interest or preference, it doesn't always reflect the actual value flow or efficiency of the system like Value Stream Analysis does.
Dot voting is more subjective, based on team members’ opinions and the immediate importance of tasks, whereas Value Stream Analysis provides an objective, process-driven view of where focus should go based on value delivery and efficiency.