Really, just how much can someone fudge their application to make much of a difference? All the factual information (credit score, payment history, employment, DTI, etc.) can't be fudged and that's what most of us (at least I hope) use to determine what we invest in. What is written by the borrower in addition to the factual information is the only thing that can be fudged, but if the factual information doesn't back up what is written, then I hope we're all smart enough to figure that out.