I don't mind throwing myself under the bus. I was under median during OCI - I don't know where, exactly, because Michigan doesn't rank. But I feel confident that I was comfortably under. I had a really bad 1st semester and a so-so second semester.
OCI was fine for me. There were some ego blows, sure: several firms with robust practices in my area of expertise* gave me the cold shoulder. But I got great interview experience, not to mention a bunch of callbacks. I ended up going with the firm that was my first choice going into OCI. It's a quirky process, but don't go in thinking that your grades are going to sink you.
* I don't mean to sound like a dbag when I use the term 'expertise'. All I mean is that I have a graduate degree and a bunch of years of work experience in a particular field (and several firms that do a ton of work in that field dinged me).