I used to tow an '06 Jeep wrangler Rubicon Unlimited 2 door, equipped with custom bumpers, winch, Handi-Man jack, added skid plates, rock rails, oversized tires, and a 30 gallon gas tank over the Continental Divide (Marias Pass on U.S. 2, Homestake Pass on I-90, and Monida Pass on I-15). At first, I had a 1995 Tioga Class C with the 460 V8, and it did OK. Then, I got the coach in my sig. and the V10 is MUCH better.
I have no idea what the Jeep weighed. I did not weigh it.
Now, I no longer have the Jeep, and I have the truck set up for being towed. I have not weighed it, either.
IMO, success is more important than numbers.