Being a mechanical Engineer that has being working on the automotive industry the past 18 years, I learned that for every problem there are always a great number of technical solutions... Some solutions are more expensive than others and some more technical elegant than others....
To buy a bigger truck to solve swing problems is an expensive and not elegant, to say the least, approach.
It's the approach of: Put more money and increase the weight of the TV that you solve that problem.
Unless you like a big truck with a big diesel engine (has nothing to do with towing) swing can be completely eliminated with a Hensley or Propride hitch (~$2500).
That is the technical, engineer way to solve (solve - not reduce) the problem and as a bonus you save a pile of money in the process (more brain, less money
Also I can't understand the fear to be at the stated limit of carrying capacity or towing capacity. For the producer to have put those numbers on the chart they made sure that they will have absolutely no liability in doing so... It means that the components would fail with probably twice that weight...
Again, I'm talking about sway control.
Now, if the reason for a big truck is because you want to town 10K pounds uphill @ 65mph... That's a different story....