No my uncle does not work for Nintendo. Will three pictures be proof enough for you?
I have more pictures of the trucks that I drive with my company name and DOT number on the side like this one.
I cannot and will not post pictures anywhere online of the inside of the shop that I work at of the facility that I work at. Taking pictures within those building is grounds for termination of my employment there as well as taking pictures of the engines in the trucks.
If you see a Cummins truck with a trailer like the one in the second picture chances are I am driving it or my co worker is driving it.
Those are just the torque numbers on there, no horsepower number are on that graph and they do look like that. The reason for the straight lines where they plateau is because of torque limiting. Meaning in the calibration for that torque they are reducing the fueling to hold that amount of torque even if it is capable of producing more torque. With the ability to produce the peak torque at lower rpm's you can hold it longer through the rpm range.