Deep understanding of models

Hello,
The pdf files of the DD13 DD15 models are very insufficient for technical information. They offer many HP models with the same engine.
For example, for DD13 it shows 410 HP but 3 models with different torque values. Why these 3 models are produced, in which brand model year vehicles.

410 HP @ 1625 RPM 1450 lb-ft @ 975 RPM

410 HP @ 1625 RPM 1550 lb-ft @ 975 RPM

410 HP @ 1625 RPM 1650 lb-ft @ 975 RPM

Mercedes offers identical engines in their trucks in the European market, only differentiating them with software, but what is the situation with DD13s in the American market?

Yani 350hp model DD13 ile 505hp model DD13 arasindaki tek fark yazilim mi?

Is there a website where I can get more information or someone who can share a pdf?

Thank you,
Have an accident-free days!