just so you know, a beefed 3/4 ton is not equal to a 1 ton.
Chevy uses heavier a arms, and torsion springs. Plus on a cab chassis the frame is not even remotely the same size as a pick up. Also the cab chassis frame is wider to accept aftermarket bodies.
Then lastly the engines both gas and diesel usually are rated different than the pick ups. The higher gvw means different emission requirements, so the auto makers can get more power out of them.
My 98 cab chassis 4x4 with the 6.5 diesel has 195 hp, which is like 10-15 more than a 1 ton pick up.Its only a computer code change, but it adds up.
I am not the biggest and I am not the best but I fall somewhere comfortably in between.