When you see that person next to you training for dear life on the stepper at the highest work level hanging on for all they are worth.

They are probably not working the gym machines as hard as you are! Due to the fact they are using the additional force gained by hanging on to the rails just so they can push down those pedals. 

The used calorific value on their display is actually false, and can be half of what is shown.

It's always best to apply the correct technique for each machine this will ensure the right part of your body is being exercised. Cheating on gym machines does not help you with your motivation in the long run.