How many games since the merger has the winning team scored more defensive touchdowns than offensive touchdowns? Extra points don't count for the defense or the offense. Also list the game where the defense has scored the most points.
I'm fairly sure this happens on a somewhat frequent basis (particularly in the lower scoring era pre-1990s), but it's somewhat challenging to get to the exact answer as "defensive touchdown" isn't usually in the box score. I'll edit this when I have time to pull it.
Here's one, though, that every NFL fan from 2006 should remember... Chicago 24, Arizona 23. Zero offensive points, 2 defensive touchdowns and a special teams touchdown (plus a field goal).