Actually, since you came out from CA, i would suggest you to get skills since this game is based of skill. I asked many QQers if they played CA before and they said yes, many people QQ for hacks but people are very pro.
Also, all weapons are kinda balanced compared to CA with gai minigun and airtriske. In this game, some G coins guns (cash guns w/e) are kinda balanced to the normal guns, so don't worry about G coins ''noobs''.
The sensibility is important in this game, a bad sensibility of your mouse will mess up all your aim, mostly in sniper class.
If you want to know the guns that will come out or even test them, try to download K.AVA which is korean AVA. Lags a big more since the server is in Korea but it's the first AVA created so you can have every guns o_O
HAVE FUN!
+ this game has AWESOME GRAPHICS!