If a person has more mass do they do more work or exert more power?

(When walking up the stairs)
(Compared to a person with less mass)
Am I on the right track?
This is what I have so far...

The person with most mass does not necessarily do the most work. If two or more people are walking up the stairs in the same distance and time they are doing the same work. Also who exerted the most power depends on if other people walk faster or not. If someone has more mass it does affect the work more do to this mass but...

1 answer

more mass=more work
power depends on work and time
Power=mgh/time