Obviously there are no guarantees, but based on his current size and speed and abilities, and projections for his growth, he is projected as a hands down DE in the nfl. Assuming he progresses and grows as expected, it would be unlikely that a team running a 3-4 would draft him. Again, no guarantees but based on what we currently know that is the most likely scenario. It was a factor in his recruitment as the USC staff wisely pointed this out to him many times.Couple things...as with all things, there are no guarantees in life. No guarantee he'll play on Sundays. There's quite a long road between here & there. Secondly, in the NFL, he kinda doesn't have a say so in where he plays. Mainly depending on where he gets drafted. Couple of examples. At Arizona St., Terrell Suggs was a pass rushing DE in a 4-3 scheme. Gets drafted by the Ravens and now he plays on his feet on the outside as well as with his hand on the ground. And if he decides that he doesn't want to, it might hurt him in the long run. Take Albert Haynesworth for instance. He knows, he's a better DT in a 4-3 scheme, but the coaches want him at DE in a 3-4 scheme. He comes out looking like the bad guy and his image and value have plummeted (worse than it already was).
Bama actually trumped USC in most recruiting areas, but the areas USC won were major - primarily location/family, friends at USC, and the 4-3 Defense. Realistically Bama wins out in just about every other category, but for JC those 3 were biggies. It's a compliment to Bama's program and coaching staff that they were almost able to overcome those with a kid so close to his mom.