If you ever see the Wyatt Earp complex, when the cop gets out of the car, its usually a rookie. If you see it in a veteran, its dead wood complex.
A rookie can be thwarted by more knowledge and experience. Old age and treachery beats youth and exuberance every time.
A veteran knows our outs, and can thwart them and is less afraid of departmental censure - you WILL be raped.
In each case, don't call him sir (it empowers the cop) - the cop should call YOU sir. Be polite obey all commands, and advise him he is being recorded (just like the Toronto cops do now). Play it by ear, don't use all your ammo at once. Watch any escalation. And believe it or not, being friendly is dangerous with savvy cops, its a technique used by real bad boys to hurt or kill the cop.