Here is my detailed scouting report on Williams.
Positives: The first thing that stands out about Williams is his size. Standing in at 6-2 and weighing 313 pounds, Williams has perfect size to play the defensive tackle position. He's very stout and possesses a thick build, but he isn't too tall to the point where he couldn't generate good leverage.
Williams has one of the best first steps in all of college football. When he times the snap, Williams can use his quick burst to fly into the offensive lineman and disrupt the play. That type of athleticism makes Williams such an intriguing prospect. It's rare to see a man of his size with such a good first step, so NFL scouts are going to be interested by that ability. When Williams is allowed to go and attack the gaps, he can be a major problem for the offense.
Williams also possesses very good strength and power. He has the power to drive lineman back and anchor along the defensive line. I believe that he would rather use his athleticism to beat offensive lineman, but once he begins to use his raw strength more then he will become an even better defensive tackle.
The Dallas Cowboys have always been fans of versatility and Williams is a highly versatile defensive tackle. Williams has the size and strength to play nose tackle, but he also has the quickness and athleticism to line up at the other techniques along the line. I can see him thriving in either the 3-4 or 4-3 scheme, but in our new system he would probably be best at playing the three-technique.
Williams has tremendous upside and is still learning how to play the defensive tackle position. He didn't play too much high school football, and he only played for two seasons at UNC. Some may take that as Williams being a raw prospect, but I see the type of talent Williams has. He's a quick learner and has adapted very well. With better coaching and more experience, it's possible that Williams will continue to grow into a more complete player.
Negatives: I can't say that I have watched every game that Williams has played at UNC, but from what I have seen there seems to be some consistency issues. Most of these issues probably stem from a lack of technique. Good athletes in college football will often rely on their athletic ability. Once they begin to learn proper technique, then they become more consistent. With more experience and NFL coaching, he will learn how to overcome his consistency issues.
Williams can generate good leverage, but he does need to learn how to get lower.