Are “default values” and “estimated values” the same thing?

Our office building has data center space which is submetered but before the UPS rather than after. I received a reply from Energy Star indicating the following: "ENERGY STAR is currently exploring acceptable alternative approaches for measuring IT energy such as allowing measurement on the input to the UPS (with a conservative factor for the efficiency of the UPS applied within Portfolio Manager). If accepted as a valid approach, this would allow you to measure at your existing meter. Additionally, ENERGY STAR has extended the availability of Portfolio Manager Generated IT energy estimates for Data Centers that comprise 10% or less of a building’s gross square foot. The estimates will be permitted until the upgraded version of Portfolio Manager is released in the first quarter of 2013." My question is, can I use these estimated values to calculate my building’s Energy Star Rating for our certification since Energy Star currently accepts them(our performance period is over in December 2012), or are these values considered “default for space attributes or operating variables?” I need to make sure as the impact on our score is pretty significant. Thanks.