Ah, so maybe you should drop a FB post to VR, since he said they don't know why the Duc behaves like this in the rain in contrast to the dry. You solved the mystery buddy. Rossi said that last year's bike (800) was also competitive in wet conditions (though I could barely detect this "competitiveness" from my cold and wet vantage point at Silverstone last year), and he was pleased to confirm it once again, though he was at a loss to explain why the bike doesn't perform as well in the dry. (See post practice interview)
Nicky offered an explanation:
“We tried to understand why in real rain we had a bike that was fast,” said Hayden. “We used to think with the carbon chassis that in the dry we were too stiff and our theory was that the stiffness actually helps to heat the tyre more, because in the rain you don't always want something real soft.
“Even with suspension you think you need to soften it up, but when you do that the wet tyres don't push into the ground and they don't push through the puddles and you don't generate the heat and work the tyres.”
Nicky's under the impression it has something to do with putting heat into the tires. Being that they are using aluminum now, it seems the new bike continues to does this same thing well provided its in wet conditions.
On a related note, Nicky also mentioned he didn't want to tear up too many tires since they were limited. So then, the question I have is, will Bridgestone ever provide an intermediates for these patchy (non-rain/non-dry) conditions? Will Dorna or the riders ever push for it? Wtf.