Too many variables to generalize to a definitive statement. Those of you who are mechanical engieers who have taken classes in structural engineering and mechanics of materals courses can identify the ignorant statements and those with scientific validity. The rest of you will just have to judge on your own.

Of course there is always the element of, what will sell. That does not necessarily jeapardize the safety liabilty constriants on design. If you like compact frames, manufactures and others will give you enough information to support your decision to buy that frame and vice versa.

If you are not an engineer with experience and the tool set to understand and you want to understand the difference, either get a degree or talk to an experienced engineer. The forum is not a vehicle that will adequatly answer this question.