I agree. My dually has a 5.7L in it. It has pulled my 11,800 pound boat on a 2,000 pound tri axle trailer and did a commendable job of it considering it to be a “mouse “ motor. It has had some terrible loads put on it and behind it but it never really went far. It will be 22 years old in April and I am still punishing it. I just have to remember that it is no Indy car. Lol
No doubt the 6.0L will haul donkey compared to the 5.7L