Proving SAP_ALL did not alter SUIM activites

It is my understanding that with SAP_ALL you could alter the SUIM results and hide your activity, in theory. When SAP_ALL is used how do a view wither SAP_ALL altered any information used by SUIM? I am trying to prove that while SAP_ALL was used I can trust the results of pulled from SUIM as the SAP_ALL account did not modify entries. I think this can be done through CDPOS and CDHDR tables, but not sure how to search.