I'm not sure what EP sees in Sawchyn to elevate him up to #13 OA. Based on the 15 or so Seattle games I have watched, he seemed much more like a lower tier prospect. He had flashes of high performance, but he also tended to disappear for stretches. Earlier in the playoffs, he also seemed to take meander a bit and take excessively long shifts, while being gassed during the later parts of the shifts.
Let's just say that if he's an "A" grade player, Benson has to be A+++. Watching them head-to-head, Benson was just miles better. If Sawchyn is really the #13 player available, you have to wonder if this is a weak / shallow draft.