Not necessarily. For some people that have alot of skill at this game and play on pubs, they will have a much higher kill/death ratio than your average player. Any solid competitive clan player on TWL, Cevo, CAL, etc will overpower most public players on pub servers. 9 times out of ten, they will be accused of hacking from the pub player that runs down the middle of the street in plain view, or stands in a window for minutes on end. These same pub players will then go to the exact same spot, every single time and become so predictable, it isn't funny.
Now, as a player you can only contact server admins and ask if there is something you could do about a suspected player and see how they respond. Other than that, until you have your own server, start streaming, there isn't much else you can do.