Nissan Wingroad is (sort of) luxury version of Nissan AD, and is definitely better than AD in all aspects, except price.
External body of both vehicles is same, except wider backlight on trunk.
Just keep in mind that AD is very good but quite simple car, and lacks many features. Also rar seat is straight "phatta" and uncomfortable. But that can be improvised
My advice: wingroad is better, but go for the any of the one which is in better condition. If u are lucky to find AD or Wingroad, u will love it for your travels in longer trips.