No it does not. I would like the Bullettime is triggered every 1 kill for any player. BulletTime is triggered when a player reaches the set kills in a row.
eg if new cvar
sm_streakkill 1
Player A = 1 kill => Bullettime active
Player B = 1 kill => Bullettime active
Player A = 2nd kill => Bullettime active
The Bullettime will trigger several times in the round when the player reaches 1 kill (for example)