My 98 2500 had lousy brakes - undersized front calipers with pressed on rotors (12.5")
and rear drums that were just lousy in OE form. My 2014 3500 stops as well as my wife's SUV, and with the factory exhaust brake the brakes rarely get hot loaded or not. Brake fade isn't a thing anymore. Calipers are Better than 2" larger (14.75") and a LOT thicker.
The front end of my 98 was wore out by the time I hit 80k miles. Ball joints, tie rods, a steering box that I constantly fought, and one wheel bearing was all replaced by that point. 14 is still tight at 140k. Nothing has been replaced. Never even had an alignment done yet. Everything under that truck is substantially beefier with better geometry. Both trucks the same use, lease roads and poor secondary and dirt roads. I'm just under 40% towing miles for the life of the 14. I'd expect the 98 was similar.
47re in the 98 was the epitome of a slush box and I burned the TC out of it just over 100k miles. The 14 is much improved, did I mention it has a factory exhaust brake?
Interior bits are much better than the 98 (remember cracked dashes, rear door latches that constantly froze shut, and failed blend doors?)
Really the only knock is the emissions. In 140k I've had to replace a DEF injector and a NOX sensor. When something fails that costs more than I want to spend some parts will find their way to the raftors in the barn.