He's been a 3 year starter for Alabama, he has shown the skills to play man corner in the NFL, and he is extremely physical.
Right now a bunch of guys are bunched together after Joe Haden - Kyle Wilson, Donovan Warren, Brandon Ghee, Amari Spievey, Kareem Jackson and Devin McCourty, with Perrish Cox, Patrick Robinson and Dominique Franks possibly still competiting with those guys. I assume the combine will be where one or two guys stands out in terms of their footwork, ball skills, speed, and agility. It's too early to separate the pack right now.