In the following video, Motley Fool financials analysts Matt Koppenheffer and David Hanson talk about one surprising -- and disappointing -- metric from Bank of America's (NYSE:BAC) stress test results: its pre-provision net revenue, or PPNR, as projected by the Fed out over the stress test period. Matt tells investors how far this little number has fallen since last year, why it matters, and what the silver lining might be.