Design is a compromise to make a lot of conflicting task and systems needs all fit and work reasonably well together.
Unless you have a list of all the relevant considerations which went into the design configuration definition exercise, there is no way you can infer much at all with any real confidence ... some Types have a higher thrust line than others is about the best you can do.
Those folk with a design background (and we have quite a number of aerodynamicists and stressmen who choose to dally on this site) can offer reasonable guesses as to what might have gone into the design for a given Type.