That 2010 10-6 Packers team was world beater by no definition. They were not favored to beat the Steelers and the pre-season rankings nobody had them even going to the superbowl. Same story with the 07 and 11 Giants.
Define world beater? And how many Super Bowl teams were world beaters, whatever that means?
Second, so what if they weren't favored to beat the Steelers in the Super Bowl. That doesn't make them the worst team to ever play in the Super Bowl, certainly not worse than the Cowboys.
And just because no one has you going to the Super Bowl doesn't mean you're not a Super Bowl contender.
The 2009 team was 11-5 and then 10-6 their Super Bowl year. They weren't coming off three consecutive seasons of mediocrity, like the Cowboys.
The 2010 team was 2nd in overall defense and 10th in overall offense.
The 2010 team never lost a game by more than four points and never trailed by more than seven.
The 2010 team was ranked 9th in yards per game, tenth in total points, & fifth in passing yards
The 2010 team was ranked fifth in yards allowed and finished second in least amount of points allowed.
And, of course, that team had Aaron Rodgers, one fo the two three quarterbacks in the league at that time and now.
As for the 2007 Giants, they were 14th in overall offense and 17th in overall defense (and they beat the Cowboys, and I know you're not saying this Cowboys team could beat the 2007 Cowboys team).
As for the 2011 Giants, they were 9th in overall offense and 25th in overall defense.
Meanwhile ...
The 2013 Cowboys were 16th in overall offense and
DEAD LAST in overall defense.
No, those teams that went to the Super Bowl were
SUPERIOR to the Cowboys team we've assembled between last year and this year.