What am I missing?

I was told about this site where you can check the value of an individual upvote by entering the Steemit user name in the blank. I often use it to track the slowly growing value of my own upvote.

Today one of my posts was upvoted by Hive account@williambanks. I checked the value of his upvote and Steemdollar tells me it's currently worth well over six cents.

But when I look at the overall value of the post he just upvoted, it's only showing a total worth of one cent, and this is with a few other people having upvoted it.

This is not a complaint, just trying to understand where the discrepancy is coming from. I'm wondering if the formula for the SteemDollars site is off? If so, is there another site I can go to obtain more accurate information about upvote value?

Thanks in advance to all who can give me some insight.

Update: This post was upvoted by Hive account@ned and is only worth a dollar. Hive account@ned is well known to be a whale. Something is off.