Speaking with a couple Oiler scouts who watched him play over Christmas time...
Brock's only problem is consistency. I'm told he can dominate a game by himself when he's on but then be invisible the very next night. Sometimes that happens within a game, a period or even shift to shift.
I know he's well thought of and I thik Michigan State has been changing their roster and system recently to benefit smaller speedy players so Brock, being a big guy, isn't on a team with a system that's perfect for him.
He should still be a good one, that's why he cracked the top 20 here at HF.