Almost every class has a knockback and a stun. That one of the main reasons I will get bored of SWTOR soon. Very obvious class homogenization in PvP. In WoW every stun is different and not every class has them.
---------- Post added 2012-02-10 at 10:10 AM ----------
If target is on low HP, take cover and Snipe. But yeah, Operatives are gimped.