The Golfweek ranking for Medinah is a bit of a mystery, IMHO, especially since Medinah was recently reworked by Rees Jones. Say what you will about the quality or distinctiveness of his design work, there is no question that Medinah is a much better and more interesting golf course after the renovation.
There might be a bit of renovation fatigue setting in with those who knocked Medinah. It has been reworked, revamped, redesigned so many times that it is difficult to remember what the original design was like. Sounds a lot like Augusta, dontcha think?
The changes at Augusta, from a championship golf perspective, have to be viewed favorably. The jury will decide Medinah's fate in August after the PGA, but I think it will hold up quite nicely.