As I said in this thread AS7 did not have MBeans.
If you are looking for such statistics you might look into the CLI /deployments. If you use :read-resources(include-runtime=true, recursive=true) you can see all
actually i can start the jboss-cli.bat or jconsole.bat to list all the existing subsystems/mbeans. but after went through them, i didn't any available subsystem to provide the information likes the count of entity have been created/removed. the as7 won't expose such kind of information or i'm wrong?