With respect to Scotte and many others, everyone pulling the "2010 Packers were a potential dynasty" card is indulging in revisionist history. The 2010 Packers went 10-6, a record that would have missed the playoffs in a lot of NFC divisions the past couple years. Their DVOA that season only ranked 4th, a 23.0 score that is dwarfed by the 38.7 and 40.0 DVOA scores the Seahawks posted the last two seasons, the best by any team back to back in 17 years. Green Bay was a deserving Champion, but they were not an exceptional one.
Their defense, while good, only scored about half the distance from the median that Seattle's just did. It was built mostly around ordinary players. There were just two guys you could say were elite, Matthews and Woodson, and Woodson was nearing the end of his prime. Capers did have a good track record at the time but always in short stints. Flash forward to today, and most Packers fans want him gone. Their 2010 defense and team on the whole compares pretty well to New Orleans last season, a good team but one that didn't even win their division and struggled to beat the Eagles in the playoffs.
The Packers were a young team. But aside from Rodgers and Matthews, not many of those young players were actually all that good. Almost all the playoff games they've won in the Rodgers era have been very close games. They didn't dominate, they survived. And even when their defense was good, they were a finesse team. Which is why I never bought into them as a true dynasty.
Regarding the Patriots, they ARE a dynasty. Three in four years gets them there. The two silver medals they got in 2007 and 2011 should factor into the discussion as well. Funny enough, some of their best teams came in seasons when they didn't win the Superbowl. In 2010 they had an astounding 44 DVOA, and didn't even make the big game.
I think the Patriots ended as a threat to win the SB after 2011. Since then, they have been good but never after that were they great. That's a 10 year run making the SB every other year. I only see positive lessons to learn from the Patriots, not negative ones. Every team has to evolve over time and the Patriots have done this as well as anybody. If not for a helmet catch, we'd be saying that the Patriots dynasty peaked in 2007.