"If healthy" is a phrase that makes all of our speculation sort of moot, and what the division hinges on. The Red Sox 2013 I've maintained was not a triumph of a "new Red Sox way" so much as a spectacular vindication of the old way (the 2003-2011 one) which Cherington and Farrell had prominent roles in at various times. 2012 was just a massive perceived correction for a 2 year playoff drought which was driven mostly by lots, and lots, and lots of injuries. Between a few free agents doing well, and Farrell largely being able to field the team he wanted all season - we were able to be a wire to wire champ.
If we have the same sort of injury luck as last year - and expected performance from new guys (as well as Farrell improving as a tactical manager, and he showed improvement over the season there) ... we will be a contender again ... I have us behind Detroit and Texas in the AL, but not by any huge margin. But a bout of poor injury luck can change things quickly, especially in the hypercompetitive AL East.