I have never said that everything good that happened is Ben's brilliant creation and everything bad was not his fault. Did I not just post that the Lackey trade feels like a Ben move to me? Along with the Porcello and Hanley deals? Now, I have defended those moves because I can see the rationale behind them. However, I have also defended the Panda signing, even though I disagreed with it and think that it was Lucchino's brainchild, because I can see the rationale behind it as well.
That said, anytime you have Bobby V as the manager, all bets are off. He alienated half the team before the season even started. IMO, it is difficult to give any kind of fair assessment to that team under that type of managerial circus.
In short, here's the way I look at it. Ben, and the rest of the FO, get credit for building what should have been a contending team in each of those years, 2012 included, minus Larry's insistance on hiring Bobby V. The players get credit for winning the WS in 2013, and the players get the blame for not playing to expectations in 2014 and 2015. Bobby V gets the blame for 2012.
Regardless of how the team did, going into the season, I felt that we had a contending team in each of those years. The FO is responsible for that. Good or bad, they are not responsible for what happens on the field - that's on the players and coaches.
Ben will also get part credit for any future success the team gets involving players that were acquired under his watch.