in the NFL combine. Actually, chances are better that they DON'T get hurt in a bowl game. And as far as Smith, if I was an NFL coach, he actually hurt his stock by selling out on his team. Guys like that tend to hurt team chemistry and have two year holdouts.
Also, McDougle is a bad example, and the MS/AL HS All-Star game is bad example. From what I understand, McDougle didn't follow through with his rehab like he should have. Not saying that he would have been what he was before the injury, but he certainly could have come back at a higher level than what he did. That's on him.
Plus the HS All-Star game was in the middle of June when those guys hadn't played a down in about 5-6 months. Bama played about 2-3 weeks ago, and have been practicing, so I'm sure he's still in "game shape" than he would if the bowls were played in June.
Of course all of this is assuming that Smith actually signed with an agent to skip the Sugar Bowl. I highly doubt he did.