And BleacherReport had their article on what Scouts, Coaches look for in a QB
Most top 10 QBs have most of these traits, seems Schaub is ok with most of these.
http://bleacherreport.com/articles/1...back-prospects
By Matt Miller(NFL Draft Lead Writer) on May 8, 2013
Once you have the film, what do you do with it? Here are the eight criteria I find most important when evaluating quarterbacks for the NFL.
1. Accuracy
Despite what some may say, accuracy is one of the few traits that I believe you cannot coach into a quarterback. You either have it or you don't, and it is the single-most important aspect to being able to play the position at a high level.
2. Vision
Seeing the field is the second-most important trait when scouting quarterbacks. If you can see the field and recognize your open receivers—and then use Trait No. 1 to get the ball there—you’ll live as an NFL quarterback.
3. Leadership and Poise
In preparing for this piece, I spoke to several NFL scouts. One quote stuck with me throughout my writing—"I want a guy that can carry everyone's hopes." That's a classic statement to wrap up what leadership should be about.
4. Arm Strength (Velocity)
Arm strength is impressive, but how important is being able to throw 70 yards in the air? Not very.
When looking at arm strength, I’m more impressed with velocity than distance.
5. Pocket Presence and Escapability
NFL defensive coordinators spend hours upon hours scheming ways to try and get to the quarterback. That can all be thrown away by a quarterback with good pocket presence.
Pocket presence isn’t mobility; it’s the ability to see and feel pressure.
6. Anticipation
Some will call this “throwing your receivers open,” but essentially this boils down to being able to know when and/or where the receiver will be open and getting the ball there on time.
7. Mechanics
Mechanics can be taught—but ideally we find quarterbacks who are NFL ready coming out of college.
A proper throwing motion can be debated, but the basics are set.
Throwing motion: The quarterback should throw with an over-the-top motion where the ball comes over the shoulder and is released here. The ball should not follow a trajectory under the shoulder—also known as "side-arm" delivery.
Follow-through: The quarterback should step through his throw, swinging his back foot through the throw with his front foot pointed toward the target. The front leg should work as a foundation for the throw.
Outside of these two notes, mechanics can be debated. Some quarterbacks excel at changing their release point and motion
8. Size
When looking at NFL quarterback prospects there used to be this baseline of size that each player had to meet—6’2” and 220 pounds. That was the bottom line for being a successful NFL quarterback, and there were few exceptions.