Wee bit over weight

Since this is about addressing the weakest points in a chain, going with better rims/tires, a beefier suspension, and airbags will make the FAWR and RAWR the weakest points, and from what I read, the Ford's front axle is 6000 pounds, the rear is 7000 on a SRW model.

REAR AXLE SPECIFICATIONS
Model
F-350
SRW
F-350
DRW
(6.2L Eng.)
F-350 DRW
(6.8L/6.7L
Eng.) F-450(1) F-550(1)
Make (Standard and Limited Slip) Visteon Visteon Dana 80 Dana S110 Dana S110 Dana S130(2)
Max. Rating @ Ground (lbs.) 7280 9750 9750 12,000 13,660 14,706
Type Full-floating
Driveline
Attachment
Circular Flange 1480 End Yoke
Housing — Type Cast Center Stamped
— Cover Attachment Bolted Welded
Section — Tube Dia. (in.) 3.50 4.00 4.25 x 4.25
Synthetic Lubricant
Capacity (pt.)
7.0 8.25 16
Spring Centers (in.) 41.5
Wheel Bearings — Type Tapered Roller
Gears — Type Hypoid
— Material Alloy Steel
Ring Gear — Pitch Dia. (in.) 10.50 11.25 11.8
Pinion — Mounting Overhung
Differential — Type (3) 2-Pinion
Axle Shaft — Spline Minor Dia. (in.) 1.50 1.72
— Spline Major Dia. (in.) 1.57 1.85
— No. of Splines (Hub End) 37 34
(1) F-450/F-550 models with High Capacity Trailer Tow Package include S-110 axle with unique 4.88 axle ratio gearset

These specs are for a 2012 Ford F350 SRW show the axle will only bear a gross weight of 7280 pounds.

To then go and put 19.5 commercial wheels and tires on this axle would appear to be a waste of money.

Just the opposite situation with the Dodge and I think also the Chev.
The Dodge axles are around 10,000 pound plus axles...

The Ford F350 SRW would not work well with any heavy truck camper??
Am I missing something...???