Medium format makes noise about noise with the Sensor+ technology

Luminous Landscape has a detailed article on the Sensor + technology which will be made available soon with the Phase One P65+ digital back. To summarize the article, this technology gives medium format a boost in high ISO performance, but it comes at a trade off, it "bins" four pixels together, so the 60-megapixel image becomes a 15-megapixel image.

So, how big is the improvement in higher ISOs with this technology? And how does it compare with similar speeds of DSLRs? We won't spoil the findings, check the exciting Luminous Landscape article for the details!