I am over a 1.5 Kill to Death Ratio... but I mostly only play Warzone. Warzone is fast paced and extremely fun. I too use about 75% (or so) sensitivity and have thumb stick extenders (some really nice Naki rubber ones I got from my old PSP Swing Grip kit) and they make all the difference for every game but especially shooters. While i agree you should focus on the objective you should first and foremost focus on killing everyone near you, this is vital to your objective. If you try and do a hack and someone is coming up on you... then what was the point?