I'm glad you dug deeper into the subject and pulled out the actual winner-vs-looser ratio.
My biggest concern when I looked at the charts in his post was that none of them went below zero. There are posts that don't profit, so I expected to see that in the charts.
If you look at the "Top Promoted Posts, by spending" chart, every bar where red portion is higher than the blue portion indicates a losing post - where author had spent more on promotion that yielded in rewards.
You're welcome. Thanks for starting on a topic that needs some analysis to help Steemians get better results.
Aha...I see it now! I was more focused on the second chart, and then just looked around for negatives. The confirmation bias in action! Oops.
I would have called you on that! but you were faster lol :)