I had a look at my only ad.
The column has been added to the top 2 levels of the ad, but not to the books themselves.
And the columns have a nice little dash in them.
Which suggests to me the KENP figure is going to be just as accurate as the sales figure is.
In other words, totally useless.
I'd not had an ad going before I started this one, and after I did, KU reads definitely improved. Now it might be the case this isn't happening any more, and I do really need to do a new ad sometime soon, but I think it's a matter of Amazon hasn't got the usual clue.
For people spending big money, and getting big results, the new page figure is probably going to be lost in what they normally do anyway.
For people like me doing almost a token ad to keep the Zon happy, all we're going to see is null figures.
So those doing well out of ads will be convinced to keep going, and those doing badly from ads will be convinced to give up. Amazon are not going to notice the ones who give up.