WOW!
Normally I do not put much stock in these video comparisons as they always seem bias.
Usually there is a uphill pull with a loaded trailer, but they don't tell us information like the gear ratios between trucks, etc, etc.
But these appear to basically be two identical trucks!
This is a simple test of frame strength, I don't think there is anything to be fudged here. And all I can say is, "Oh no...Ford"?
I have driven both the 2011 Silverado HD and The Super Duty. Unloaded the Chevy HD truck drives like it's on rubber pucks for suspension. The Super Duty is amazing smooth, maybe the frame twist is intentional?
That said I had a 1993 Dodge Ram 350 years ago and I twisted it up in a ditch so much so that I damaged the cab of the truck with the box. I kinda thought trucks were a little stronger nearly 20 years later.

