Some of the numbers manufacturers put out for payload and towing capacity are, somewhat suspect, IMO.
Ford for example rates the F150s at 1,485 to 2,311 lbs, obviously based on length, trim etc,
So it could be that with a sled deck and 2 sleds they are overweight, not to mention quite top heavy, i think allot of the issues would be braking capacity
I can understand why people lean towards the 1/2 ton trucks, I had a few and would routinely load them well past legal weights.
Once switching to 3/4 tons I could see the skectchyness of what I was doing. There is no comparison to the added ability of the heavier duty 2500, or 3500 frame and brake sizes.
I don't think I'd pull the trailers and loads I do with a half ton truck again. With the 2500, long box crew, it's just like a full speed Sunday drive with 8 or 10000 lbs.
With my half ton trucks that was a full grip of the wheel and lots of thought into steering, speed, stopping distance.