I have judged model shows in the past. We never judged on the accuracy of an entry. It was not even an option on the scoring card.
I can't speak for all shows but for the ones I have entered and judged in, it was about the quality of the build and finish of the model. We judged on things like visible seams, do all the wheels touch the ground, are the clear parts clean and free of blemishes, the quality of the paint work etc...