is these the correct operators?

[falconx1 13]

are these the correct operators != ? to display the message if only killer is different from the victim?

if (victim != killer) then {

player globalChat format ["%1 was killed by %2", name victim, name killer];  

};

[mindstorm 8]

Indeed they are.

[mikie boy 18]

Yep

_killer = _this select 1;
_unit = _this select 0;

if (_unit != _killer) then {

player globalChat format ["%1 was killed by %2", name _unit, name _killer];  

} else

{
player globalChat "you killed yourself dumbass";

};

[falconx1 13]

thanks i was in a hurry and wanted to skip the testing for pro a answer lol but i tested it it works as indented thanks for replying tho