Actually the 260 is a medium card still!!! (its better then 350-550) just so you know, the first number is only the generation the last 2 numbers are the important ones, IE. a 290 would be much much much better than a 570 like I have (and thats a high tier card)
Recommended almost always means Medium GFX, so as you can see at the hardware page, you actually need very good cards to pull off high and ultra settings!!!!
Any NVIDIA 50 is entrance level. Any 60 is low level, any 70 is medium end, 80 or + is hight end.
Thats how Nvidia treat its product.
Now obviously you got the generations leap.
Now, maybe i am a little severe as 2XX generation can only run DCS A10C on medium setting, but flight sims eat normal computers at breakfast as they require much more draw distance (this one sim draw distance is around 60KM bubble in all directions, much more than what Skyrim or any FPS can ever need to draw.)