Last time I checked they pretty much balled out with their B squad the last game of the regular season.  They had a couple not so great games coming down the stretch but they where also really banged up.  Should be getting some of the critical guys back for that game. 15-1 in the regular season, yeah they must suck.
Week 12 pretty handily beat the Lions.
Week 13 win a close one vs the Giants.
Week 14 blow out the Raiders (that game was over before half)
Week 15 Rodgers didn't have a good game, but the receivers couldn't seem to catch a ball either, and they lose to KC.
Week 16 pretty handily beat the handicapped Bears (because they still suck).
Week 17 the Packers B team takes care of the Lions, and our backup QB throws 6 TD's.
Yeah, that was a poor stretch all right.  Outscoring opponents 210 - 142.  Saints where a little better down the stretch outscoring opponents 234 - 111.  
One thing is for sure, that game is going to be a barn burner.  They are basically the same team.  Because of Green Bays ability to cause turn overs (+24 in the regular season), and they'd be at home, I'd take them.  Going to be a great game either way.