Re: Calories burned??
Depends on the regression equation the machine uses. In general, exercise machines overestimate the amount of calories burned, eg. reported to be by 10, 15, 20%. It's difficult to get an accurate figure under non-laboratory conditions because there are variables that can affect energy expenditure but don't enter into the equations used by the machine, eg. biomechanical efficiency, machine calibration.
However, you can still use the figures as a rough estimate.