See how my dog has a waist? That's a pit bull. He might have the rear legs of a chicken (he had a poor upbringing of abuse and needs an operation where they have to break each leg in three places) but he has the perfect pitbull structure. A UKC judge said if our dog had normal rear legs (and testes) it would win shows. Even with the bad rear legs he's still a solid 78 lbs.
The other dog is beautiful, but not an APBT.