That's because the Falcons adjusted and played a deep cover 2 in the second half.
The Falcons last two possessions didn't look like the Saints went into "playing not to lose" mode.
The front 4 brought some heat on Cousins and it paid off huge in not just sacks but batted passes as well.
We all know that the season is lost at this point but there was an intensity today that had been missing for a very long time.