This link might help. (It doesn't cover everything, there's more info out there if you look)
https://steemit.com/steemit/@rkrijgsman/curating-rewards-explained

If not, I'd suggest you Google it and keep looking. I'm busy.
Really, I appreciate you for being skeptical but even if you were right about this issue it wouldn't change much in my mind as I've never once even worried about how much I'm making upvoting posts, that stuff is minimal compared to actually creating content. I'd suggest you work on creating more content and better content rather than to worry about making much on upvotes, especially with such a small amount of steem power that you have.