Youngy
In PEAK condition
ELITE sprinters - 9.69-10.20
Above average sprinters - 10.21-10.50
Average sprinters - 10.51-10.99
Wannabe sprinters - 11.00 - 11.50
Snails - 11.51+
claiming it WILL never produce fast athletes
I said - ELITE and you are putting “fast” athletes into my mouth. I did not say that!
At best the Bradley method (if implemented correctly) could produce - AVERAGE sprinters, and a few above average sprinters over 50 year period and Allan Wells!
There are MUCH better CURRENT methods that would help athletes achieve much faster results than the Bradley method. I consider this as free PR for Jimbo 
I am not trying to suggest you should stop using it but it is obvious ( I hate to repeat myself so many times) that this method is S&C method.