You can divide the Copyright, the Comparison command and the Comparison results by using the DDNAME=SYSOUT in the REPORT command, and add the SYSOUT DD SYSOUT=* statement in the JCL.
As a result, the Copyright and the Comparison command are output in the SYSPRINT DD. And, the Comparison result is output the SYSOUT DD.
If you change the SYSOUT=* of SYSPRINT DD to DUMMY, you can remove the the Copyright and the Comparison command from joblog.
DDNAME=SYSOUT <<== Add this.