
Certification
Certified True appears on a report when the asking rent for that one unit sits within the standard. It is free, it happens automatically, and it points at the full analysis rather than asking anyone to take your word for anything.
That is the whole problem the mark solves. A listing with a number on it invites an argument that neither side can win, because neither side has anything to point at. A mark that resolves to the entire document, comparables and attribute answers included, ends the argument before it starts.
For an owner the trade is straightforward. You give up the few dollars a month that were never going to survive the first renewal anyway, and you get a listing that answers the obvious question before anyone asks it. Units priced near the market lease faster and tend to stay leased, and both of those are worth more than the difference.

The mark and the report do the work that a paragraph of reassurance in the listing description never does.
There is a quiet relief in handing someone the evidence instead of your assurances. It changes who has to do the trusting.
Certification is evaluated on the asking rent you enter, so the report tells you either way.