In domain.sh process controller is started with host controller's options:
# Execute the JVM in the background
eval \"$JAVA\" -D\"[Process Controller]\" $PROCESS_CONTROLLER_JAVA_OPTS \
\"-Dorg.jboss.boot.log.file=$JBOSS_LOG_DIR/process-controller.log\" \
\"-Dlogging.configuration=file:$JBOSS_CONFIG_DIR/logging.properties\" \
<snip snip snip>
\"-Dlogging.configuration=file:$JBOSS_CONFIG_DIR/logging.properties\" \
$HOST_CONTROLLER_JAVA_OPTS \
-- \
-default-jvm \"$JAVA_FROM_JVM\" \
'"$@"' "&"