OK, let me be clear about this one, there are very simple reasons for each choice.
Raekwon McMillan vs. Reuben Foster:
Injury potential. I could talk for days about how great a prospect McMillan is, because I truly believe he is awesome. But the reason this is an easy comparison is because Foster is damaged goods. His shoulder is a very real risk ... and after Dion Jordan never playing, and us having a roster full of injured guys like Koa Misi, Branden Albert, Mike Pouncey, etc. etc. etc., I highly doubt our front office wants to invest in yet another injured guy. Yes, Foster runs around with a bad crowd. Yes Foster made a bad decision at the combine. Yes Foster is already in the NFL drug program from a diluted sample at the combine ... all of those are problems for sure ... but it is the injury issue that caused him to drop out of the first and probably second round in our evaluation. He's not the first Alabama player to be driven hard and have joint issues ... it's pretty common. I can't help but think of Cyrus Koundjou (sp?) the stud OT who has been a shadow of himself in the NFL because of joint issues. The Foster you're paying for with your most prized possession of a 1st round pick is not the same Foster who dominated for Alabama. The NFL version is a thumper with a glass shoulder. Conversation finished ... not worth the risk.
Charles Harris vs. Jordan Willis
I'm also a fan of Jordan Willis the player and person. I was excited he was available in the 1st and the 2nd ... I would have been happy with him at either spot. I see him as a closer to Cam Wake type than Harris. And Willis is much better than Harris vs. the run. But it is one trait that separates Harris from Willis .. it's the first step. Harris can explode out of his stance and get position before the tackle can get to the spot. Then Harris can get and stay low, bend, and run the arc. Those are the skills that make pass rushers such a premium, and those are Charles Harris' strengths. Yes he is a hard worker, yes he is great at using leverage, yes he plays far more athletically than that bogus 40 time he tested, yes his spin move is Freeney-esque, but it is that first step that scares tackles. It is that first step that makes him elite. It is that first step that is better than Jordan Willis, and it is that first step that makes Harris such a good pass rushing prospect. Personally, I would have been just as happy with Willis, but I get why we were so enamoured with Harris.