I realize that you and I will never agree on Cook. We'll find out who is right in a couple of years.
You found four sub 60% college passers who found some success in the NFL out of 14 years of drafting. Let's look at them.
Matt Ryan was one pass out of 1347 from being a 60% college passer and, not surprisingly, he is the most successful of your four. Ryan's last three years in college he completed 62.1%, 61.6%, and 59.3%.
His completion percentage got worse over his college career (something you criticized Cook for) and he finished below 60% for his career.
Carson Palmer steadily improved in college and finished his senior year completing 63.2% of his passes after being at 54.2% and 58.6% the previous 2 years. As it was, in the 9 years before he got to Arizona he had a career 54-67 record as a starter.
And Matt Ryan's got worse each year as a starter. It means absolutely nothing.
And don't even try to imply that Palmer isn't a quality QB. The Rams would spend a #1 pick without thinking twice if they believed that QB was another Carson Palmer.
Jay Culter at least had one season as a better than 60% passer. He is not a elite passer in the NFL and has a .500 record as a starter.
And he had a worse career completion percentage than Connor Cook. Who cares if he's an elite passer? He's a quality QB. The Rams would happily take a young Jay Cutler.
And it's odd that you bring up record here considering Connor Cook's team is 36-4 since he took over as a starter. You consider that irrelevant (or far less important than completion percentage) but consider Cutler's record in the NFL relevant?
Matt Stafford steadily improved in college, finishing his senior year completing 61.4% of his passes after being at 52.7% and 55.7% the previous 2 years.
Matt Stafford played on some ridiculously talented teams in a QB friendly system and still finished with a lower career completion percentage than Connor Cook.
Connor Cook, on the other hand, has seen his completion percentage decline each year, finishing his Senior year with a 56.8% mark. While he may find success in the NFL, I doubt he is ever more than a 60% passer.
Matt Ryan (career)
College - 59.9%
NFL - 64.2%
Carson Palmer (career)
College - 59.1%
NFL - 62.8%
Jay Cutler (career)
College - 57.2%
NFL - 61.9%
Matt Stafford (career)
College - 57.1%
NFL - 60.4%
Donovan McNabb (career)
College - 58.4%
NFL - 59.0%
Every single QB I gave you with a college completion percentage below 60% is now completing more than 60% during their NFL career except Donovan McNabb. And frankly, I don't think a single one of us Rams fans would be complaining if Connor Cook turns into a 6 time Pro Bowl QB that only has a career completion percentage of 59%.
His completion percentage declining is irrelevant. Peyton Manning's worst completion percentage of his college career came his Senior year in college. Same with Matt Ryan. Same with Tom Brady. And I'm sure there are more QBs that's true of.
In today's NFL, that gets you a lot of middle of the pack seasons and draft picks in the teens.
Yea, the Carolina Panthers are really struggling this year with Cam Newton only completion 58.8% of his passes. I'm sure the Rams would struggle to win if we only had a Jay Cutler level QB. Why spend a first round pick to get that when you can stick with Case Keenum?
Agree you don't base an entire evaluation on one stat. However, completion percentage is a very important stat. Doesn't matter how good your read defenses, how good your decisions are, or how strong your arm is if you cannot complete passes.
No, it's not. We're not talking about a QB that can't complete passes. We're talking about a QB only completing 57% of his passes instead of 60% of his passes.
Completion percentage is not an important stat. Tim Tebow, Brandon Weeden, Blaine Gabbert, etc. had higher career completion percentages in college than Aaron Rodgers, Tom Brady, and Peyton Manning. Those busts completed plenty of passes. But unfortunately for them, it did matter at the NFL level how good they were at reading defenses, making decisions, etc.
It's odd to me that you ignore Cook's stellar TD to Int ratio (for a pro style college QB) to harp on completion percentage. I happen to value a high TD to Int ratio far more than a high completion percentage. Give me 2015 Cam Newton or Blake Bortles any day of the week and twice on Sundays over 2015 Kirk Cousins or Matt Ryan.