Moton is pretty much pegged into strictly a man blocking scheme and even then, he has to have major improvement to his footwork. He isn't quick and will give up the edge pretty easily. He's also slow to actually get out his punch, so he's just got to get quicker and faster before he's ready to start. I see no way a team takes him in the second.
Apparently dating back to the Senior Bowl, the Ravens had been raving about Humphrey and showing vast interest. Of course, this was before signing Carr, but that won't stop the Ravens from drafting a corner. Humphrey is an excellent fit for the Tampa 2 and Cover 3, both staples of the Dean Pees defense. He's a scheme fit, a fit from a need perspective, and a first round talent from Ozzie's alma mater where he has connections. He's fully who I expect to be the pick (barring someone like Mike Williams being there).
I think Barnett might be the most overrated prospect on these boards. You can find my thoughts on him all over the place. I'll fully support it if he's the pick, but he's far from my top choice. I also think you can get better value with a Lawson (second) or Tim Williams (third) than taking Barnett at 16. With Allen, those shoulders are apparently turning in major red flags. I don't think he comes even close to the Ravens if they check out, but if he begins to slide into the teens, I think he falls past the Ravens because that's a big red flag to how bad those shoulders are.
I think Wilson is one of the top DB's in the class and I fully expect him to be a starter because of his vastly advanced ability to excel in press. He just lacks the long speed, but there's going to be a team that will value his technique over his athleticism (Seattle anyone?) and I'd bet money he goes in the first.