I can't imagine the recommended spec would be for anything less than 30 FPS.We need FPS on each spec please, they don't matter at all if we don't know average FPS
Hm. That's not what I assumed. I think all of these are for 60fps. You'll play in 60fps with each hardware listed but it will be either on low, high or ultra graphics etc... Depending on what you have. If you play on low with your GTX780, you'll get 60 fps but if you try ultra you might get 10 fps.I can't imagine the recommended spec would be for anything less than 30 FPS.
So my guess would be minimum/recommended is aiming for ~30 FPS. High and ultra would be 60 FPS.
Just a guess though.