Well, since you didn't click on the last link I provided (the 2nd of 2) which would have answered any and all questions as to it's cult atmosphere, I'll provide a similar one below that goes directly to the questions. It lists 100 attributes of a cult, and you can switch back and forth for the answers.
From the scan I did of maybe half of them I'd say it's pretty spot on. It ranks each of the attributes on a scale of 0 - 10. Some are obviously a zero, like "mass suicide" but there are a lot of 8, 9, and 10's in fact, on a quick glance, I saw some rated lets say a 7, that I personally would have said a 10, and vice versa. Mileage may vary.
Anything I could relate is written right there for you to read.
If you want to know the success rate, google it. I'm not here to spoon feed statistics to you. If something I said piques your interest, none of what I've said is a state secret, and can easily be found.
Here's that link...have fun.