The standalone.xml is related to the JavaEE web-profile and the *-full contain the full javaEE stack.
If you use a *-ha configuration the cluster features are added, i.e. node detection via JGroups, session replication via Infinispan.
You can use a diff utility to see the exact differences
you can easly check the <extensions> defined in stalandalone.xml and Standalone-****.xml
You'll find more extensions in Standalone-full.xml
Thanks a lot to all for the Help.