The abstract from the first study I sent said nothing about "religious style" circumcisions, I don't know where you're getting that from. Given that these were adults, they certainly had the ability, and based on their self-descriptions (BSFI's) claiming no change in sensation, they kept their frenula. IF THEY LOST THEIR FRENULA, IT WOULD HAVE FELT VERY, VERY DIFFERENT.
Friend, you need to do some of this research on your own. I've spent at least 100 hours doing my research, and I've concluded that cutting earlier hurts kids more. You disagree because people say it's not as bad. Don't ask a doctor. Don't ask a person cut at birth. Learn how the penis functions and how circumcision changes the functions of the penis, and then make up your own mind.
>They had already observed keratinization, how much worse could it get?
The skin cell layers keep piling on. See this picture. It doesn't finish in 12 weeks. It actually continues over the entire course of the person's life.
Kinsey had an orgasm scale on which cut men consistently scored lower for orgasm intensity. Better yet is the Sorrells 2007 test, where they measured fine-touch sensitivity, and discovered that the foreskin is far more sensitive than the glans.
But you're right that there isn't a great way to measure this. A better approach would be to determine what is lost to circumcision and use deductive reasoning from there. Given that 10's if not 100's of thousands of sexually sensitive nerve endings are removed, and that the frenulum is usually seriously damaged or removed, and given that intact men experience massive pleasure from frenular stimulation, WE CAN DEDUCE THAT CIRCUMCISION REDUCES SENSATIONS
>I know, I just thought there still would be a pretty big difference in the sensation of the glands, guess not.
There is, but it is a long, slow process.
hold on, one more thing to add