As I had problem finding playable servers in ROOST, I don't have enough experience to miss that much like OP,
Though I played many major fps like ghost recon advanced warfighter pc mp, cod 4, cod mw2, sniper ghost warrior, arma1, arma2, crysis 2, battlefield bad comapny2, all on pc and about +1200 hours in total.
I gotta say weapon firing and being accurate shooter is really easy in RO2.
I wasn't good long range shooter in cod series, and bfbc2, crysis 2 pc mp.
But shooting long range target in RO2 is maybe the easiest among the games I played so far.
Due to small sway, non significant holding the breath function, "always" "regardless of shooter's firing position or status" pinpoint accurate rifles made the shooting in RO2 very easy thing for me.
And I really don't appreciate this somewhat dumbing down the difficulty of shooting, I quite don't think it's realistic...maybe somewhat worse than cod series;;;;;
I don't really mind the fact that I have to tweak the config myself to get good fps, nor about the waiting for future patches for more stable gameplay.
But, easier shooting? this isn't what I expected from RO2.
when I bought RO2, I wanted hardcore FPS, as realstically hard as it gets cos I like games like ghost recon advanced warfighter 2 pc mp for it was quite realistic and hard as hell.
I am somewhat disappointed at reduced sway, insignificant holding breath function, overall noob friendly firing sequence, it's not quite I expected and it's one thing I really can't like about RO2 now.