Nikon V2 scored overall 4 points less than the old Nikon V1 mirrorless camera, however the low-light performance is bit better compared to the old model. According to DxOMark Lab the current V1 users must wait for a better version.
DxO Mark Lab Says
Overall, the regression in performance, when compared to the Nikon 1 V1, suggest this camera is not as good a buy as the V1 – its results were simply underwhelming. If you already own a Nikon 1 V1 and are thinking of an upgrade, then you’ll probably find more benefit in waiting for the next iteration to see what that brings, as the V2 will not give you appreciably better images over what you have already.