1.To understand difference,You need select 'log level' option from plugin 'Audit log' and upload workflow on server.
2.On AE, the Audit information is present on the Logs-> Audit log tab. Here at Object_Name and Description are displayed variable/field name and its value respectively.
3.We have also provided the option to download the Audit logs on AE.
Note:
INFO logs are used for basic information on the variable and fields and TRACE logs are displayed more detailed logs.