Great analysis by this guy. Also confirmed what I saw on tape from him.
Between the numbers, Jones is very impressive. Confident, crisp, quick decisions, and very quick release (reminds me a little of Jimmy G with the quickness of his release). I literally have ZERO concerns about his ability in between the numbers; I think he has a chance to be spectacular in that area.
Outside the numbers, he is inconsistent. My take is that his inconsistency is due to lack of arm strength. Lack of arm strength affects his confidence, his mechanics, and even his accuracy at times when he tries to muscle the ball through and gets that tailing effect- similar to a major league outfielder with below average arm strength trying to muscle a long throw.
For me, it's a concern but I wouldn't call it a major concern. There have been plenty of QBs that have succeeded at the pro level with poor throwing arms. Do I think it could improve some in time? Maybe- probably. But it's not going to be a 20% improvement as someone else on this thread suggested. It may not have to be. Most likely he's going to need near perfect mechanics that are repeatable under pressure to make it work. Can he do it? Some learn to, many others do not. That's why I would have preferred to see him drafted in round 2 or ideally round 3. But we've got him now, so hopefully with good coaching he will get there.
Only other negative thing is that when he gets to his 3rd or 4th read he tends to be just a click late, especially when he has to turn his body and throw to the other side of the field. This is something that even pro starting quarterbacks not named Brady often struggle with. And that will improve almost certainly.
Last thing- an underrated part of his game is the Marino/Brady effect. Very good subtle movement in pocket and a good feel.
Plenty to like if he can overcome that subpar throwing arm.