When Vince Young shows that he can actually pass the football to the level that Matt Leinart does, you can then tell me that he is the real deal. There are numerous quarterback skills that Matt Leinart is FAR BETTER than Vince Young at.
The first of which is proper mechanics and footwork. The second of which is accuracy. Matt Leinart also reads the field much, much, much better than Vince Young. Young doesn't see things on the field like a great quarterback sees them. He's the type that makes a read and runs if that read isn't open. That's not Matt Leinart. Matt will make the presnap read, change the play at the line, and then complete a big pass against a tampa two coverage. I've yet to see Vince Young check a play at the line.
The ONLY thing Vince Young does better than Matt Leinart is run with the football.
On a scale of 1 to 10, with 10 being the best, I'd rate Leinart's passing skills as an 8 and Young's passing skills as a 3.