reputation I don't know, voting power is calculated differently by each site. I think I got my calculations right, but with this confusion between STU and USD, I may have to revisit the display of it in steem.supply. The only metric which is not dependent on calculations is the percentage, which is taken from the blockchain. In steem.supply, I show the voting power at the current moment, including the regeneration that may have occurred from the time of the last upvote.