Here is an interesting tidbit from an article in The Chicago Sun-Times.
Bears linebacker Hunter Hillenmeyer is the answer to a couple of fun trivia questions. Not only is he one of only two defensive starters who weren't originally drafted by the Bears, but he's also one of only three drafted by the late Mark Hatley.
It's not as confusing as it sounds.
I know that there can be other circumstances such as injury and an over paying free agency market, but this type of stat is a reasonably fair way to judge a GM at evaluating talent and how well a team takes care of its players. It would seem that our GM is a better judge of defense than on the other side.