I know that title sounds sarcastic, but it's not. You will be smarter if you read websites like Football Outsiders and Cold, Hard Football Facts.
Cold, Hard Football Facts has an article about the Viking run D you should read. Here's a key passage:
With just one game left in the 2006 season, the Vikings have held their 15 opponents to a mere 817 yards on 312 attempts. That's an average of 2.62 yards per carry. You have to go all the way back to the 1951 Giants, who surrendered 2.3 yards per rush attempt, to find a defense that was tougher against the run.
Here's how the Vikings now stack up against the greatest run defenses of the Super Bowl Era. As we discussed last week, one thing will jump out: Most of these teams were not very good. Note the 2000 Chargers. Only four defenses in the Super Bowl Era were tougher to run against. The 2000 Chargers went 1-15.
Kinda punctures a big hole in the whole "you must stop the run to win" theory. The truth is that you must do a lot of things well to win. No matter how well you do one thing, like stop the run, it won't help you if you suck in several other areas.