What are events and unique events?
The App+Web properties are based on different measurement model than standard analytics properties.In App+Web properties everything we capture are either event or user scope even sessions and page views. Since we are moving away from session based measurement model we will not have unique events i.e. total number of events per session.
The new property provides events with number of occurrence i.e. count, which is similar to events with total events in standard analytics event reports.
App+Web event report