Love your avatar...do you like bunnies or did you recently have a little one?
There are several people here who have had success in losing a lot on SBD. However, I do believe that anyone can lose a lot of weight if they find the plan that works best for them and they stick to it. You'll find many successful losers in our Maintainers forum and in other areas around 3FC.
Personally, I lost 120+ lbs just using SBD. Personal experiences led to a regain of about 40 lbs, which I'm working on getting rid of again. I've been following this WOE for over 5 years now and still love how it makes me feel.