I voted C at the time, and my reasoning was two-fold. First, it seemed like the things they got only vaguely fit their needs. Schwarber was a good bat, but not really a 1B. Davis and Robles were useful arms, but at the time — a week before the Matt Barnes meltdown, in particular — it seemed like the rotation needed more shoring up than the bullpen.
But the positive side of my assessment was that all these acquisitions seemed like good values, once the rest of trade market came into focus. We sent out Aldo Ramirez (a decent SP prospect with a chance to be a useful 4/5/6-type starter in a few years, Alex Scherff (a future middle reliever with a set-up ceiling), and Michael Chavis. I liked Aldo quite a bit, but he was a fair price to rent a bat like Schwarber, and I think the other deals were, frankly, steals.
When you look at the deals other teams were making — the Dodgers got Scherzer and Turner, but gave up a haul, including a franchise catcher, two good SP prospects, and a decent AA outfielder — it's not hard to see that we just weren't in position to do that.
(If you want to see what an A at the deadline looks like, I love Washington's deadline: they added 10 of their present top-30 prospects in six deals, several of whom are really high-end prospects who are close to or already MLB-ready, almost entirely from players who were leaving at the end of the year.)