Here's the thing about MLB projections, whether they are made by computers or by the most knowledgeable baseball analyst/scout, because of the randomness of the game and the unknowns of the human element, it is IMPOSSIBLE for any system or person to consistently predict a team's record within 6.4 wins. Here is how one stat geek describes it:
"Basically, it's like a law of nature that it is impossible to regularly forecast team records with a margin of error of fewer than around 6.4 wins. Not difficult, but *impossible*. It's impossible in the same sense as constructing a perpetual motion machine is impossible, or turning lead into gold on your kitchen stove is impossible, or accurately determining the temperature 100 years from today at 4:33 pm is impossible. No matter how much you know about the team, and the players, and the second baseman's diet, and the third baseman's mental state, and whether the right fielder is on PEDs ... the best you can do, in the long run, is a standard error of around 6.4 wins.
When forecasters have a contest, and after the season, one of them has "won" with, a standard error of, say, 4.9 wins ... well, you may be impressed. But he was certainly at least partly lucky. He beat the natural limit of 6.4. He was better than perfect. You may think you're praising his forecasting acumen, but, really, you're implicitly praising his ability to influence coin tosses."
So, if you're expecting any forecaster to be within 2-3 games of most predictions, you are going to be gravely disappointed. It statistically cannot happen.
That does not make projections useless, however. They still are a very good gauge of how teams look on paper in terms of talent, and how things should end up if everything went according to plan, even though we all know that they won't.
As of now, the Sox are the second best team in baseball on paper. In terms of the offseason, that's about the best a GM can do.