OK did some more thinking after re-watching this video. Even though Mitch Lowe said it's "cost of goods" they reduced (and SEC filings say it's "monthly deficits"), the ONLY number that matches up with the $40 million monthly deficit in May, $45 million in June and so on mentioned in SEC filings is the Gross Loss figure. If I adjust MP subs to account for various points in time, using the ~1.7 ratio, the Gross Loss matches up with the SEC filings. I think Mitch was just dumbing down the definition.
It's also interesting that it's August, yet Mitch chooses to quote May's ratio of 1.7. Why May??? I believe it's because the ratio was completely different and much larger in April before they stopped MP subs from re-watching the same movie and sharing accounts.