Why Do Uninstall Counts Differ Between the Key Metrics Dashboard and Segmentation?

Problem

There is a discrepancy in the uninstall counts between the Key Metrics dashboard and Segmentation numbers.

This difference is expected.
The Key Metrics dashboard tracks the uninstall time attribute and records it when a user uninstalls the app from all their devices.
Segmentation numbers count each uninstall event for each device separately.