if it took 2 shots to kill at the same range from a Shoty as a Sidearm, and it KB'd and slowed their rate of fire a noticeable amount then that might be usefull, but since they are a 1 hit kill in most situations i don't see how it would help 99% of the time yeah if your behind them and shoot them in the back and it slowed there rate of fire or interrupted it long enough for you to kill them , but again, that's not a mechanic you can rely on in very close quarter fraction of a second game play. if you cant stand toe to toe and have the same TTK with sidearm as Shotty from the same range than Shotty > sidearm ,, always . they could make shotty 5 foot range anything over takes 2 hits , and have the fire rate equal to what a sidearm would kill with in the same time , so if your within 10 feet the sidearm would be =/= chance , within 5 feet Shotty > sidearm and over 10 feet under 15 Sidearm > shotty . but i doubt that will happen as the shotty crew would cry to Momma .