My overall impression of the team thus far in this season is that there's a much more prevalent expectation to win. Harbaugh has a confidence in what he's doing because he's done it before and because he's one of those workaholic coaches that leaves no stone unturned. I think at this point in the season, any win is pretty much a gift considering the team has been playing and practicing together for a little over 2 months with an entirely new coaching staff and philosiphy.
The offense, obviously underperforming, can largely be attributed to poor offensive line play and perhaps that unit just needs time together as well. This team, as opposed to teams in prior years under the previous coaching regimes, will get better and continue to add complexity to the offense and defense, making them more difficult to predict and therefor allowing the talent of the players to shine through.
As I said, any win at this point of the season is pretty much a gift and the team is already playing with house money. If they can play .500 ball until week 10, I believe they'll be a very dangerous team to have in the playoffs.