well, since you like scouting reports and they are so scientific.
what scouts said about
Tom Brady
"is a smart, tough QB who throws accurately, makes more big plays than you expect and rarely makes a big error despite not having a strong arm...he will eventually be a good starting QB, but will always have trouble making the throws that you need to get power behind."
Peyton Manning
Manning is probably the most prepared QB to enter the NFL draft in several years.. He has had a storybook college career, and has been in a top level program with excellent coaching, and he has maturity and great intangibles to go along with his natural skills.. He should be able to pick up the mental aspects of the game early on the NFL level, and should play very quickly. He has great overall field vision. He is a fierce competitor, and all of his mechanics are very solid. He has good arm strength, but not necessarily a “gun” that you might expect from a QB at the top of the draft.. He has adequate mobility and good overall AA, although he is not a scrambler by nature. He has done an excellent job of getting the most out of his abilities, but he is not quite as natural a player as Leaf. One question that some NFL scouts have is the question “will he get any better?”. At times he gives the appearance of being a self-made player, and sometimes those types of players don’t always go on to great NFL careers. In Manning’s case, he may be a solid and productive NFL QB, but he may not have Hall of Fame type skills, but it certainly won’t be for lack of effort
Ryan Leaf
Leaf appears to be the hot QB in this draft, and he led WSU to a storybook season...He is a physically imposing QB with great size and strength....he is very sturdy and durable in the pocket, and is a surprisingly good athlete for his size...He has a strong arm and shows good touch, and can change up the speed on his passes...He has good feet, but is not really a scrambler. However, he can stand in and take the big hits....He is a very naturally gifted player, but could improve on his throwing mechanics, although it is not a major problem....There are no physical or athletic limitations to hold Leaf back from becoming a great NFL QB.
and then there was Mike Mamula and Tony Mandrich,
yeah, those scouting reports are so scientific and accurate.