Talking about the relationship between steempower and reputation is of course closely related. Because steempower and reputation shows that someone is active in steemit. But if you speak which is more influential. Of course steempower.
reputation score can be said as a number that shows the activeness of a steemians in making original and interesting posts in steemit.
and it can also be said that the higher the reputation score of an account, meaning the more knowledge of the world of steemit it has. While Steem Power is one that shows the upvote power of each account.
Thanks @edymunawar