This should ease people's concerns at least a little. I see a lot of posts about how worried people are about the 49ers and Seahawks passing the Packers on the totem pole. IMO, those two teams were some of the luckiest teams in terms of staying healthy.
To put it in a little perspective, imagine the 49ers were without:
MLB Patrick Willis (and his replacement) for the entire season
OLB Ahmad Brooks for the majority of the season
SS Donte Witner for 6-8 weeks
WR Michael Crabtree for pretty much the whole season
RB Frank Gore in and out of the line up all year
RT Anthony Davis for the season
I doubt they would have been playing in the Super Bowl this year.
Not making excuses for the Packers, but it would be hard for any team in the league to deal with the injuries the Packers endured. If anything, I'm impressed with how well they performed relying on young and unproven players. This bodes well for the Packers' future as these young guys mature, the Packers will be better because of it.