Alik Griffin comparing the Fuji X-T1 and Sony A7r:
My take away from all this is that you have two RAW files that are geared for two different users and it comes down to preference. Would you rather apply noise reduction yourself in post and have a sharper image at low ISO, or would you rather have a cleaner image at high ISO to start with? For me I would rather have clean high ISO since sharpness is a lot easier to apply than noise reduction. And I think most average Joe photographers would prefer this as well.
As with cameras on your iPhone, these days it is less about the sensor and a lot more about the image processor. No doubt in my mind that Fuji is leading the way in that regard.