Are you targeting document acces through the AccessPoint? Then data reduction for ADMIN works just the same as for USER. Moreover ACCESS=ADMIN doesn't do anything different from ACCESS=USER. Everyone is a USER in the AccessPoint and ADMIN.is non-exstent as a separate more powerul role.
In QV Desktop however, things are a bit different. ADMIN is now considered to be as powerful as a developer. Not good for granting acces to users with restricted access but less restricted than others. ADMIN will get the full works anyway, either by getting it from the start, or by gaining the ability to disable any securty switch you may have enabled. Except for access to the hidden script. That's reserved for those who know the Hidden script password.