Last time someone post this kind of statistic/information, someone give those member a merit. Let's see whether it'll happen this time.
I have always felt that those bounty reports should have been done off-forum... Either on a dedicated site that was built for nothing but handling those bounty users, or maybe even in a google spreadsheet document directly.
It might because some manager barely qualified for their task, where they have only very basic analytic and excel skill. If they're familiar with google tools, google form and spreadsheet are convenient option. They could filter out bot and detect cheating (which multiple account or same email/cryptocurrency address) easier.