If two people are the same weight, same size and running at the same speed... but one is super fit and his heart rate bearly rises above 110bps, the unfit persons heart beat is at 180bps and they run for the same amount of time, who burns the most calories? is there a difference, and why?

This could be a simple answer that I'm missing, but someone asked me and I wasn't sure on the correct answer. Just that if someone is unfit, then doing exercise is likely to make more of an effect on them than someone who is extremely fit, therefore (possibly incorrectly) they will burn more calories??


Cheers,
Grant