"any guy with a GOOD release" -- you answered your own question in a way. How many bowlers on BR have a truly good release, and how many bowlers in your typical league do?
With that in mind, it's easy to see how the women on TV have more hand than "most" or "some" folks on BR/in a league. The vast majority of bowlers don't have good releases, and that's a fact. You've got to realize -- good bowlers are a minority. Then, you've got top amateurs. Even more of a minority. Pros? Well, you get my point. Those professional women are such a select group...
Also, keep in mind that many folks overestimate their rev rates.