There is a huge difference between a 1/2-ton at its "limit" and a 3/4-ton at its "limit".
The 1/2 ton limit is often pushing the envelope in order to play the weight-race with other manufacturers.
The 3/4 ton limits are often "paper" limits due to many factors: tax/license/class friendly, distinguish between the 1 ton, easier to stay out of CDL territory, etc. These limits are often much less than the truck's actual capabilities.
Although it is nice to have a 3/4 ton with a lot more cargo on the yellow sticker, it is still much more capable than the 1/2 ton. Just compare the springs, driveline, frame, hitch, wheels, brakes (disc, calipers, etc), axles (semi vs full-floating), etc.
Driving the 1/2 at its limit... and you'll know it. Drive the 3/4 at its limit and you will feel much more in control.
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