Yes, the 6-1 record vs Top 5 teams is impressive, but I feel that is more of a product of our Home Court advantage as opposed to Crean's actual coaching ability. Obviously, our team is going to "get up" for a top 5 opponent at home as is our fan base. Making it very difficult for road teams to come in and win.
I feel two of Crean's biggest "Pluses" are the wins against ranked opponents and bringing in big recruits and Mcdonald's AA. However, I feel that ANY coach that Indiana has would be able to produce this given the history, resources, Assembly Hall, basketball rich state, etc. that Indiana is able to offer.
Yes, Crean should get some credit for getting the recruits and big game wins but I think his supporters try to focus the light on that too much.
The things that gets so many fans frustrated, myself included, is the roller coaster ride each season is. Every year we beat a top 5 team at home but suffer a horrible loss shortly before or after. It's to the point that I feel all fans expect it. Sort of like watching an IU Football game and being up a couple Touchdowns just knowing that the defense is going to somehow let the other team back.