I have a Windows 2012 Standard server installed on our domain. A group called domain admins is listed in the Administrators local group on the server.
If I login as one person in the Domain Admins group, they have full control of the computer.
User can add and modify printers for instance.
If I login as another person in the Domain Admins group, they do not have full control.
This user cannot add or modify printers.
I don't see a difference in there accounts.