Ok so i have played rust and many games like it and so far New Frontier is nothing like rust and here is why
Rust You can smash/raid other peoples bases (On New Frontier You Can't)
Rust has loads of loot,ranging from clothing/armour/guns ect.it has lots of meaningful loot what makes people want to raid bases due to the high amount of loot (New Frontier Doesn't Have Good Loot Like That)
Rust has good Gathering I.E Trees fall over when wood is all gone and so do rocks,also you get a lot of stuff from them and fast (New Frontier you hit the same Tree or Rock over and over again and get 1 bit of wood after every full hold,that makes getting things super boring as you are just standing there holding the mouse button for ages and thats it)
Rust has good gun play,feel and feed back (New Frontiers Guns Feel/React In A Dull/Boring Way)
Rust has Traps and base defensive things (New Frontier Has None Of That)
Rust has a slick and good feedback to movement and Animation (New Frontier Due To The NightShade Engine Feels Clunky And Has Poor Animations)
Rusts world feels alive (New Frontiers World Feels Static And Lifeless)
Rust there is a reason for killing and raiding someone (As you drop EVERYTHING you have) (New Frontier You Don't Drop Everything And There Is No Reason To Raid/Kill)
i think overall The New Frontier feels more like a TDM game with a huge map,Not a Survival Game,you just make a static base,and radomly kill people for no reward or loss.
Now ofc this could all change,but in the current state my opinion is this is nothing like rust at all.
But hey i would like to hear other peoples views on it