The assumption, incorrect IMO, is that because the Sox are 'already' 8 games back after 3 weeks that this trend of losing ground will continue, and that by the end of June we'll be 20 games back.
I see it the other way. Yes, we're already 8 games back at the end of April, but that just leaves us 5 full months to make up that ground. We don't have to make up 8 games in 3 weeks. Things will look a lot better by the end of June.