May this well help point out how they are different from all other:
Scientology is nothing more then a Pyramid Scheme Book Club.
I believe if the "so called church" gets religious tax free status, then all of its teaching / religious books should be made available to anybody. But they are not. They don't want you to see most of the brainwashing material until you are already a member and have accepted the first levels of brainwashing. That is why they are merely just a gang of lawyers policing the internet for their leaked documents and Tom Cruse videos.
Most religions build on family in an attempt to make an individual stronger.
Scientology starts you out paying for auditing and buying CoS books. Which gets more expensive over time. L Ron Hubbard was a fantastic Scifi writer that keeps you on the edge of you seat wanting more. When you run out of money, they offer to keep you going if you move into the dorms and work for the CoS. This apperently happens to 90% of the chuch followers, unless you are rich like Tom Cruse and can afford the higher level books.. And the final book at the top of the "Scientology Pyramid Scheme", the one very very few have ever seen. You probably need to donate over a million bucks to even see it. I bet its just a book of mirrors like in the Bruce Lee movie "Circle of Iron".
Scientology separates you from your family and moves you to live in dorm rooms. If they cant use you working the silly E-meters in the CoS centers, cleaning/cooking for the dorms or working in the CoS Law offices. You are simply destined to be a pamplet pusher in a subway handing out copy of dienetics. But for most its short lived. Scientology has a 95% turnover rate every 3 to 5 years.
All of this is just my opinion.. but I've read a lot over the years and this is what I've gathered.
http://www.factnet.org/Scientology/realstats.htm