The simple answer is no, the cardio machine calorie counters are not completely accurate. The real question is, as you put in your added details, how accurate (or inaccurate) are they? The answer there varies depending on many factors, some of which are as follows.
1. You body weight (some machines take this into account, but not all do). 2.
Your body fat percentage. 3. Your level of fitness.
4. How much caffeine did you have before the exercise. 5.
To what extent your body is used to the particular machine. In general, the calorie counts may be accurate to within 10% - 15%, but even that is not assured. Your level of perceived difficulty, and your heart rate can help you figure out which machine helps you burn calories faster, though they will not tell you the precise number of calories burned.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.