first they have 10th prestiege or better so they shouldnt have to play it much anymore

second they always get headshots with no effort

third you try to kill them but they wont die as quickly as they should

and finally they hack matches so that way the other team will barely stand a chance 

on forza they cant do much except get max money and be in a c class beat everyone but thats all they really can do.

not much in the way of effecting other players