After some edit on punctuation, I got result 99.58% real.
Substantial edits to AI generated text can no longer be classified as such, but as written by a human. Thus, managers should choose a confidence score that will withstand "lazy adjustments" to punctuation and typos to try to drop the score down.
Of course, if you see a post full of typos, then it's not AI generated and in most campaigns the person writing such posts would be considered incompetent and thrown out.