OP:
You came to the absolute worst place to ask about the towing ability of any vehicle... You'd be about as well served listening to the salesman that sold you the truck. See, in the TT community this topic is as toxic and produces such dogmatic knee jerk reactions possible that you will only end up utterly confused and that's _if_ the thread remains on the issue you originally raised rather than meandering off into other people's "experiences" and "perceptions" as this one already has.
Here's how to approach the issue... Look at everything you can find about calculating what your vehicle can tow/stop/control on the road. Do not look at the dry weight of a proposed TT as shipped from the factory - add at least 1000lb to the dry weight. Take into account the location of the FW tank which will affect it's towability, (in the front puts a lot of weight on the tongue which risks exceeding your payload and exceeds the 12-15% of TT weight on the ball. In the back it does the opposites. [Common Sense] If you are close in either aspect then don't travel long distances with a full FW tank... [/Common Sense].
Get a tongue weight scale and fill tanks and adjust loading yourself so you know exactly what the tongue weight is and what would be best for your setup.
Do all your research and due diligence.
Once you've worked all this out you'll know what dry weight plus 1000-1500lbs the TT is that is in the ball park for your F-150.
Now, here's the secret!!! Never, ever, come back here and tell anyone what you tow and what the tow vehicle is because you'll only start another bun fight between the "holier than thou purists" and the "Laissez Faire bringers of carnage"...
Hope this helps... ;-)