Real APBTs are not selected for structure, ever. There is one quality in which they were selected for, regardless of roach backs, angulation or chest. If it was game, it lived and reproduced. Combat dogs were never selected based on their structure, it was their heart, as heart can "overcome" all "faults." This is why there is such a diversity in type even today. If you want a dog bred to a standard, look at the Am Staff.