Files like Json and xml used in the IATF CARA project are simple text files which only provide a rule set on how data structures have to be saved. These files have know information about the application/browser they were created in if this information is not specifically added. An IATF CARA files is neutral of this information. If the same software version is used the files created in IATF CARA running in Chrome or Edge will be identically.
There is no requirement for auditors or clients to use the same browser so the data can be properly read, because the data is the same.