One misconception about the top div II corps, is that they are worse than some Div I corps. I have marched both in a top div II and top Div I Corps, and the work ethic and practices are incredibly similar, the main difference being the amount of rehearsal time (spring training etc.) I remember doing some shows as a Top Div II corps, against some Div I corps, scoring on Div I sheets, we beat out semi finalist corps.
Moral, don't underestimate these Top Div II corps...