The only slight difference lies in where you first create your Android and iOS data streams . Data streams that you create in a GA4 property automatically sync with a new Firebase project, whereas Android and iOS data streams that you create in a Firebase project require a simple integration step to be synched with GA4.
Read moreDoes Firebase have Google Analytics?
At the heart of Firebase is Google Analytics, a free and unlimited analytics solution . Analytics integrates across Firebase features and provides you with unlimited reporting for up to 500 distinct events that you can define using the Firebase SDK.
Read moreHow do I get Analytics data from Firebase?
To see reports in Firebase:
Read more