I speculated that the road dogs might win a higher % if only games where they got more than 3 points were considered
I tracked this for the entire 2019 NFL regular season - I am not including pushes - there weren't many - I think just 2
Results for road dogs who got more than 3 points:
61-41.........................59.80% winners......................14.17%........ R.O.I
anyone who wants to double check my stats or work on prior seasons can do so at covers.com - they have data going back many years
I plan to scope this out next season too