A partial digression from the subject to some extent;
I know software way more than engines to be honest, however...
Vehicles these days gather a shocking amount of telemetry data (rotational, longitudinal, etc, etc, etc).
All of this data is gathered and run against machine learning models to constantly optimize and even predict operations.
The Cummins engine, from my understanding, will "tune" (electronically) to your driving style over time from the processing this data (both in the vehicle and in the cloud).
As the Machine Learning Models get better and better, over time (with more data), the better things will be "tuned".
Quick analogy
Think about how you see ads on the interwebs for products or subjects you just had a conversation about.
It isn't because Google is "listening", it is because there are leveraging AI and Machine learning and have several what are called "digital twins" of you.
(seriously a legit replica of all of your patterns and routines, choices etc, i know freaking frightening)
They track your every movement to the point they can accurately predict not only what your are feeling, but what your are even thinking.
And they tune your internet experience to you. No ******** here, honestly this is a thing. (privacy is dead)
So, full circle, it honestly sounds like there may be more going on here if the power is that lacking and a F-350 was better (by the numbers I do not believe that is possible, depending on configuration esp if you are an HO, idk)
Probably something worth having checked out honestly.
I concur with others, you should expect performance to mature over time, absolutely!