I'm so glad this is a popularity contest rather than a death match or anything; Spider-man would definitely win a death match! It's definitely going to be fun seeing which one is more popular on SaberForum though.

Is that a vote for Spidey?
Nightwing. Definitely Nightwing. Though I am a bit biased, seeing as how I love the Bat Family. I think Spiderman is a total push-over though. Not to step on anyones toes or anything.
Say what?
This is a popularity challenge and not a contest but if it were...Nightwing and Spiderman would be a great pairing IMO.
While Peter would have the physicality over Wing...not even a close consideration...not even in agility, balance, or dexterity...Spiderman has this all day...Nightwing has the same level of advantage in training, martial ability, and related fighting skills.
The gadgets would be a foil to the webbing.
It would be a spectacular fight.
Nightwing is a non-powered adventurer who can stand toe to toe with just about anyone, powered or not.
Spiderman is a powered adventurer who can stand toe to toe with just about anyone, powered or not.
With no clear winner in classic crossover comicbook fashion I would say a draw.
But in reality it would be a tough call...Nightwing would take that next step where Spiderman would not kill him, even though he could...with one punch.
I am going to say it would be a great comic and I would love to read it!