Rogers to gun down a banged up Niners D

Ok Justin Smith returns tonight but how fit will he be? Seeing him in training during the week with an arm brace on doesn't instill me with confidence.
Also I'm convinced Aldon Smith has a shoulder injury. he is just not himself and it can't all be down to Justin Smith's absence from the D line.
With these two not at full pelt who will pressure Rogers? Because the Niners know if they can't bring heat on Rogers then they are in big big trouble.
The arrogance of the Packers is quite endearing. This could could've taken place in freezing cold Green Bay but for the Packers messing up in the last game at the Vikings. They seemed non-plussed about losing that game. As if they were thinking "We can beat any team, any where".
I expect Green Bay to put 30 points on the board tonight, can the Niners do the same? I'm not convinced.
With a 3pt start, Green Bay are a cracking bet against banged up Smiths