Aggregate vs. lowest performing

I have seen a reply on the forums from Eric Anderson claiming that the LEED Guide to Campus and Group approach is incorrect in stating that the Lowest performing building will be counted in a number of energy credits. His claim is that you will actually get the aggregate. can this be confirmed or refuted? I am in a struggle with Several large projects trying to decide between A) individual registrations and tangling with dividing out documentation details for Construction credits B) using campus approach; C) using Group Approach.