Its a combination of tires and shocks, especially if you have an off road package.
Let me share this. I've test drove both of these. 2022 Frontier in both a regular 4x2 and a Pro-X 4x2.
Pro-X has upgraded Off Road tires 18" (Hanook), and upgraded off road shocks. This configuration road rough period. Jittery ride, like a constant slight vibration in the seat and in the steering wheel all the time.
Regular SV trim level with 17" Hanook tires with no off road package. Road smooth.
2021 Ranger FX2 vs regular 4x2..... Again FX2 has the bigger AT tires, and upgraded suspension and shocks (same as 4x4)....
FX2 had the same always jittery ride because of the stiff shocks and the chunky tires. In the regular 4x2 version with Michelin 17 inch tires, totally different ride quality.
I really don't understand the Pro-X and Fx2 versions of the Frontier and Ranger. They are 4x2 trucks.
These additions negatively affect the ride quality and jittery/choppy ride.
In the 4x4 versions, its the the same ride, but you just become to expect a 4x4 isn't going to offer the same ride quality as a 4x2.
I am not sure how ETORQUE in the Ram is having any effect on ride quality. Ride Quality is what the thread is about, not transmission shifts (or how they are felt in the truck) and correct me if I'm wrong, ETORQUE would not be in action at highway speeds in 8th gear anyway.