Curious, what makes you believe he isn't NFL ready? Especially comparing him to his piers, if anybody looks like he can make an immediate impact it would be Suh.
I can go on and on about his skill set. He can line up outside and rush the passer, he can go through the A-Gap or B-Gap, whatever you want him to do. He's by far the most versatile player in this draft.
Nebraska's D was designed for Suh to take on blocks and free up the linebackers for tackles. That being said, even when he was double teamed throughout a game he still found ways to free up his teammates(obviously) and still make game changing plays.
His athleticism is wicked, how many defensive lineman do you know that can jump as high as him? Suh was tied for sixth nationally in passes defended, a category usually reserved for defensive backs. He was one of only three defensive linemen listed in the NCAA's top 100 in that category.
So aside from trying to sound smart and making a bold prediction, what's the matter with Suh? Are you going off a hunch or do you have some insight into the situation?