Modelview and the tables include the thruster cones in the length, so the herc itself is not that long. In fact, the hull itself only measures a hair over 20 meters. Its pilot is a little on the large size, but not to the degree you're showing; I'm measuring him at just about 2 meters tall exactly which, while tall, is not oversized. That pilot model was correctly scaled when it was made and I, nor to my knowledge anyone else who has incorporated it into a model, has altered that size appreciably. The Herc 2 could be a red herring but I can personally vouch for at least half of the rest in my working with them over time.
If you want to do the proper measurement, convert from POF to cob and then scale up by 20x, not to the dimensions shown in Modelview. There's too much margin for error in things you simply do not see.