Okay, you can get away with the notion that Leinert might be as complete a QB as Cutler (but I think he's going to flinch badly outside the friendly confines of LA), but Vince Young is not a good Pro QB. His accuracy is horrific. There is a very good reason he didn't throw at the combine. Forget that completion rating this year at TX. He only made a handful of reasonably difficult throws all season. He's all about the legs, and if Vick can't make it with his legs, then Vince won't either. Watch the replays of that QB challenge ESPN did with VY, Greg Olson, Croyle and Whitehurst. Vince couldn't keep the ball in the field during the distance challenge (and he got smoked by Croyle), and during the receiver challenge, when he had to throw to a spot while receivers ran course, he was never on time and rarely on target. The others kicked him all over the place.
Watch the films of Cutler against Florida or Tennessee. He made more tough throws in those two games than VY did in his career. Is Cutler perfect? God, no! But none of the 3 are. They all have numerous weaknesses. The guy that has the fewest from the standpoint of can you coach them away relatively easily, is Cutler. Leinart's fluttering, less than accurate passes will get him in trouble. Vince's inability to throw accurately and long will kill him. Cutler only has to work on not throwing off the back foot, and not trying to make the perfect pass in coverage. If Shanahan can improve Jake, then Denny can improve Cutler.