Here's where I see hard data being helpful, and I have to admit I am also hard data driven given at times the disparity between viewpoints can be so wide.
Suppose one is just starting out. I think many folks would agree simply going to a dealer you might be told with an F350 SRW your truck can handle anything on the lot, which was the first statement about TC weights I ever heard.
In cases where you are unsure, one thing you can do is reference what the truck manufacturer has to say and what the TC manufacturer has to see and look for agreement between recommendations. That does not mean to disregard what owners have to say, but forum members don't always speak with one voice and at times it can get confusing.
Now have said that in another forum I advised Nick I did not think he had much to gain by intense searching for Ford's input, but if it provided him with additional information, I fail to see the harm and disagree his desire speaks negatively to his capabilities.