Ok, I'll write it again:
I play a sniper, almost full champion geared, 495 expertise and 15500 HP.
Operative geared like me will kill me from full HP DURING THE INITIAL KNOCKDOWN about 80% of the time. I've done a lot of duels, and the outcome is always the same.
If you don't want operative damage nerfed, then devs must do something about other classes survivability.