Howard,
Unless your comment is based on tests and photography that you yourself have done with the P65+, then I can't give it any credence.
Some of the most talented and technically astute photographers that I know have used this back in recent weeks and many are deciding to buy one themselves, because they are seeing image quality that is beyond anything that they've seen before, from any imaging device.
If your personal experience with this product is such that you disagree, then fine. We can disagree. But if you're basing your comments of web images that you've seen then I suggest that you hold your opinions, because they are simply not a reflection of what some pretty talented and savy photographers are saying.
Sensor+ does exactly what is claims it does – produces an image with almost identical quality to its unbinned version, but with two stops higher ISO, which at up to ISO 400 in 60MP mode and ISO 1600 in 15MP mode, is about as good as it gets. I for one think that its quite an accomplishment and I'm very happy to have it as an available feature.
Just remember that it was only a few short years ago that the biggest MF backs were 16 MP, and anything above ISO 100 was pretty sorry. I'd say that the jump to ISO 3200 at 15 MP with Sensor+ is therefore a pretty decent advance in technology in such a period of time, given that 60MP is just a button push away.
Michael
By the way – as a general comment to other readers as well, if I sound like I am being rhapsodic over the P65+, it's simply because I'm finding it to be the highest quality imaging device that I have ever used. People can disagree, and that's fine, but I won't leave gratuitous comments to the contrary unresponded to, because they simply don't hold much water for me.