No doubt the commander was a failure in durability and reliability, and the ZJ isn't a capable contender because it essentially has the same obsolete open diff setup as the truck, although it is lighter and more agile. I've never owned one so I can't speak anymore to it, the closest I've had was the XJ which was useless. I wrote all about in the video descriptions.
And yes, of course the lockers and traction control are very simply why the newer jeeps are more capable. Adding them to a ramcharger greatly increases their utility and puts them on par with the newer jeeps, it's giving them similar technology, which = similar capability. The WJ quadradrive is the first significant improvement in 4wd design to hit the roads in numbers, which is incidentally entirely hydraulic using zero electronics, nothing preloaded, the same diff design as used in some of the viper models. The WJ actually has almost 2" more ground clearance than the ramcharger, and the underside is smoother, so what's the hang up there?
You ordered lots of wj rear ends? I have a subjective, meaningless anecdote also; I've replaced 0 rear end parts in the WJ, and I've done more front wheel bearings on 70's and 80's ramchargers than I can remember, some of them never being off road, and nothing bigger than a 33x9.5 on any of them. To be fair, what did annoy me about the WJ was the suspension bushings which beat out way too easily, the blend doors, the heated seats, which were poorly designed. The truck had issues like the steering shaft, inadequate wiring and undersized brakes. None of those are big deals though and are easily upgraded or worked around. As soon as you turn a bolt on either, they aren't stock and you are outside the scope of my original comments.
I've had the 75 for 20 years (several other 70s-80s trucks previous to that), 5 years on the WJ. I've daily driven them both, wheeled them both, and I can tell you objectively that the WJ is more capable, and every bit as rugged, period. In the winter, the truck is comparatively unsafe, and often doesn't get up the driveway without a fight. In fact, my RWD BMW got up the driveway one morning when the truck took 3 tries. Yeah, technology and stuff. That's why the truck is parked in the garage for the winter. I could go on about how my stock 330 will run circles around the stock 360 duster, but I enjoy them both for what they are. Old=obsolete unless you upgrade. Old+money=less obsolete, it's pretty simple. I get off on stock stuff, it's just my thing. It's fantasy to think that 40 year old vehicles are just as capable as new ones, and it's entirely NOT the point. Sticking my foot in the 440 ramcharger and banging through the gears with the wind whistling through puts a smile on my face that the jeep never will, but if I'm going hardcore off-road (this word has entirely different meanings for each of us, which is very important to note), the Rc stays home. The ram is good for moderate off-road duty, but that's not what I have it for.
You either genuinely missed my point, or you're being deliberately obtuse. From what I remember when I stopped coming on the site a decade ago, it's probably the latter. It's clear you are a truck guy and think jeeps are for girls, that's cool, why come in to the jeep section waving your dick? Nobody is challenging your expertise on trucks or your advanced experience fabricating and modifying. My experience is simply in owning stock vehicles, and enjoying them to the limits of their original design. Having the amount of seat and ownership time that I do in each entitles me to state my very simple opinion on the capability of 2 stock vehicles, without having to defend against vague assertions from people who presumably haven't owned both side by side. I happen to like them both enough to own them both, and they both fit a niche that the other can't. Huffing and puffing about ring gears and soccer moms is just open diffs on ice, I've got nothing else to add.