Christian Petersen/Getty Images
Drew Brees struggled at times with turnovers this season.
...they are not unbeatable by any stretch. In fact, they don't appear to be nearly as or dominant or determined as the team that won it all last year. Drew Brees is still Drew Brees, but he's turning the ball over more than ever this season. This very Seahawks defense forced Brees into two interceptions in Week 11.
They're also banged up. Running backs Chris Ivory and Pierre Thomas, easily their best inside runners, were just placed on injured reserve. That means the workload inside the tackles will belong to some combination of Julius Jones, Reggie Bush, and Ladell Betts - an underwhelming trio to put it gently. Wide receiver Marques Colston and tight end Jimmy Graham are all also dealing with nagging injuries. But probably most significant, safety Malcolm Jenkins, arguably the Saints best defensive player this year, hurt his knee in last week’s loss to Tampa Bay. Pending MRI results, his status for Saturday is currently unknown, and although the pro bowl snub expects to be fine, he could be operating at less than 100 percent.
Finally, consider that the Saints somehow lost to the Browns and Cardinals this season. While those were different games on different days and don't mean anything in terms of Saturday, the point is that they’ve reached that floor twice, so it's at least possible to happen again. If nothing else, those two losses are proof that the 2010 Saints are vulnerable to the big upset.