The Saints didn't do anything that hasn't been done before- they deployed a version of the Giants famous "NASCAR" defense, with a DL consisting of 4 defensive ends. If you are wondering whether it was the same defense that was used to defeat Brady in the 2007 and 2011 season Super Bowls by the Giants, yes, it was. The Giants had better personnel than the Saints do now, but Brady is older and the Bucs were very confused by that defense. I also noticed a couple of times when they got pressure straight up the middle, Brady looked painfully immobile. Unless he is sensing outside pressure while in the pocket, Brady has a hard time escaping pressure. He is less mobile than Eli Manning was in his last season, but Eli compensated by having a great radar for feeling pressure and was one of the least sacked QBs ever. When you are slow you have to have that radar, and be able to feel the pressure coming, otherwise your stay in the NFL is destined to be short and very painful. But the pressure up the middle is difficult for any less than mobile QB.
During the game I heard the announcers saying the tape would be passed around the league. There was tape of the 2 Giants Super Bowl wins over Brady using the same defensive scheme if anyone wanted to bother watching them.
What was funny is that Drew Brees was the only guy in the entire NBC studio who picked the Saints to win.