The Saints actually have a better chance at winning the division than they do making a wildcard.
To win the division, we'd have to win out & hope Atl & Bucs lose 3 & 2 respectfully. To win a Wildcard, we'd likely be competing with 7 or 8 teams with same or better records. You gotta figure the Giants have one Wildcard spot at 8-3, and the other wildcard will between teams with current 5-6 & better records.
But there is no high % or likely scenario that puts the Saints in the playoffs without running the table 6-0 down the stretch. If the Saints lose 1 game going forward the percentages of making the playoffs drop dramatically.