Seriously, though. Here are the facts about last year to back what Emmz just said.
1. The RF position last season OPS'd .652. Cody Ross and Ryan Sweeney can hit to the back of their baseball cards and tack on 100 points to that OPS, and I'm a believer that Ross will get the majority of the playing time and that Fenway will suit his swing well. So a .760-.780 OPS from Ross is reasonable IMO.
2. By no means was I for trading Scutaro now that we didn't get Oswalt, but having said that, he only played 113 games last season. Keep in mind - we're comparing apples to apples, so when you say "Aviles isn't as good as Scutaro", he doesn't have to be if we want to replicate 2011 offense. The SS position OPS'd .730 last year. Aviles should match that.
3. Ellsbury and Ortiz will surely regress, but the regression will be supplemented by progression from Crawford and RF. It's not at all unreasonable to expect the offense this year to be a wash with the offense last year, potentially even a little better considering the dropoff in power from Gonzo, the aberration of a year from Crawford, and the horrific RF that we had.
4. Pitching, pitching, pitching. Last year, Weiland, Miller, Wakefield, Lackey, and Bedard combined to start 76 games and threw 415 IP. They also combined for a 5.83 ERA. That's 47% of our starts right there that will be replaced by Buchholz, Bard, and likely Doubront.
If they (along with some spot starters) can combine their starts to even a 4.50 ERA, that shaves 1.33 points off of the back end of the rotation. But I truly think they will exceed that number.
Regardless, I think this team is in better shape than the team was last season, even the team that went 82-51 through August 31st, and because of that, I think this is a 94-96 win team.