If you're a 5'11' defenseman, you have to do better than 10 points (0-10), -3, on the top scoring team in the USHL if you want to be drafted. You essentially have to be one the best shutdown defenders in your draft class, or put up a ton of points. Chicago is also 4th in goals allowed in their conference, so the team overall does not do a great job at defending, their forwards are carrying the team.
From what I have seen and heard about the USHL this year is that the Western Conference plays a lot more structured pro-style of a game than the Eastern conference that really doesn't have great defensive play or goaltending, but has some high-end forwards that can score.