*Tony Stark as of Age of Ultron (Most current suit, Non Hulkbuster)
Fight takes place in a Military Hangar
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Lol. kilometers? Wasnt that guy in a whole nother starship? He could have been lightyears away. All we know is that there is no distance, if Vader can see you, he can choke you. And Iron Mans suit is no different in a troopers in that regard. But to play the other side, Tony can easily make him drop that choke by shooting at him while hes choking him.
The force choke also worked fine through the armour of the mandalorians and the clone troopers, not as advanced I know, but still it worked through their armour.
Vader shouldn't have any problem choking Tony through his suit, but then the people he generally chokes aren't highly intelligent superheroes in advanced armour, with flight, on board AI, targeting and scanning systems, and an enormous arsenal of weapons. So I am still on the fence here. Vader could choke him, but Tony only needs to survive a second or two to trigger one of his weapons. Just need to push Vader into defending himself instead of maintaining the Force choke. This environment suits Vader a bit more though. If it was out in the open, Tony could just go sky high and blast the whole area to bits, but here he can't really resort to those tactics. I'd give Vader a majority but I think Tony could potentially pull a few wins here.
__________________ Never take life seriously. Nobody gets out alive anyway.