The 18-140vr is a great budget lens whereas the 16-80vr is a great but overpriced lens.
Have you looked at the older 16-85vr as an alternative? Users seem to rate it quite highly ad it can be picked up for a reasonable price on the used market.
I did look at the 16-85 vr and I have heard quite a few good things about it. The additional length of the 18-140 had my interest now. Is there some place other than Dxomark that test lens? Dxomark doesn't seem to keep up on the Nikon crop sensor lens and I don't think they have tested the 16-80 which would be very helpful. They rate the 16-85 fairly high it appear.
Thanks
SM