My recommendation would be to buy neither! Both are over priced and only partially better "off road" than any stock type truck.
We looked at the 2019-2020 Power Wagon. Here's what we didn't like:
6.4L Hemi Motor. It has plenty of power no issues there. It's the other stuff that sucks.
1. Recommends Premium Fuel. Motor can run regular but tunes down performance. My experience with past vehicles is to run the recommended octane. I don't want to run premium. These rigs suck gas and buying more expensive fuel... no thanks.
2. Special oil required. Chrysler spec 0w40 Synthetic. I'm sure there are many people who will run whatever they want but I always run recommended fluids. Specialty oil stucks. After owning a Mercedes Sprinter... I just wanted an easy to maintain rig.
3. Cylinder Deactivation. HECK NO!!! Ok, some people like this junk but it's not for me. This is partly why the special oil is required. This is a rather complicated system that will leave you going no where when it fails. Yes, it could slightly raise your mpg if driving modestly while unloaded but this small gain isn't worth the potential issues.
4. Cam Failures. Nobody really knows if this has been fully resolved or not. I don't want to find out.
Front AAM Axle.
1. Full time rotating axle assembly. Manual hub swap is thousands of dollars.
2. Many issues discussed online regarding ball joint failure and steering.
Rear Suspension: Coil Springs.
1. Minimal "flex" improvement due to the axle link design.
2. Can't carry heavy loads well. Even with air bags just not as good as old fashion leaf springs.
3. Complicated. More joints to wear and maintain/replace.
I believe the 2018 or 2019 got the well proven ZF transmission and boxed steel frame. And the body/interior fit/finish has drastically improved. Love the manual shift transfer case. So we definitely debated the Power Wagon. But just not willing to deal with the above items.
Another tip... you can buy the base RAM truck and add the "Power Wagon" package. Most dealers don't know this. It is much cheaper than an stickered Power Wagon RAM but with all the key components in a more basic finished rig. That was what we were investigating.
Here's what we did:
Custom ordered a base XL Super Duty truck with cool features like: 4.30 factory gears, rear locker, vinyl floor (no carpet), vinyl seats (nice), auxiliary switches... basically all the cool off road type parts. (Sadly Ford discontinued the manual shift transfer case in 2019 - I'm sure you could convert one since parts were made.) Under $40k out the door.
We then installed a proper OX Air Front Locker, air compressors, Carli Suspension, steel bumpers, rock sliders, method wheels and 37s. All in... we are less money than a Power Wagon or Tremor but with much better components. Love the high pinion D60 with manual hubs, simple proven motor design (no complicated crap to fail), proven transmission, overall beefy build quality. Aluminum body is great for cutting weight and no rust issues.
Just other ideas to consider! I'd also recommend only buying if you have the cash. Having impressive stuff with payments is no good. Save the money.
www.mopar.com
