(3) Use of deadly force. The use of deadly force is not justifiable under subsection a. of this section unless the actor reasonably believes that:
(a) The person against whom the force is used is attempting to dispossess him of his dwelling otherwise than under a claim of right to its possession; or
(b) The person against whom the force is used is attempting to commit or consummate arson, burglary, robbery or other criminal theft or property destruction; except that
(c) Deadly force does not become justifiable under subparagraphs (a) and (b) of this subsection unless the actor reasonably believes that:
(i) The person against whom it is employed has employed or threatened deadly force against or in the presence of the actor; or
(ii) The use of force other than deadly force to terminate or prevent the commission or the consummation of the crime would expose the actor or another in his presence to substantial danger of bodily harm. An actor within a dwelling shall be presumed to have a reasonable belief in the existence of the danger. The State must rebut this presumption by proof beyond a reasonable doubt.
Oklahoma Self-Defense Act:
A person or a owner, manager or employee of a business is presumed to have held a reasonable fear of imminent peril of death or great bodily harm to himself or herself or another when using defensive force that is intended or likely to cause death or great bodily harm to another if:
1. The person against whom the defensive force was used was in the process of unlawfully and forcefully entering, or had unlawfully and forcibly entered, a dwelling, residence, occupied vehicle,
or a place of business, or if that person had removed or was attempting to remove another against the will of that person from the dwelling, residence, occupied vehicle, or place of business; and
2. The person who uses defensive force knew or had reason to believe that an unlawful and forcible entry or unlawful and forcible act was occurring or had occurred.
Homicide constitutes murder when:
It is committed when the actor, acting either alone or with one or more other persons, is engaged in the commission of, or an attempt to commit, or flight after committing or attempting to commit robbery, sexual assault, arson, burglary, kidnapping, carjacking, criminal escape or terrorism pursuant to section 2 of P.L.2002, c. 26 (C.2C:38-2), and in the course of such crime or of immediate flight therefrom, any person causes the death of a person other than one of the participants;
Oklahoma law is similar except it does not have an exception for the death of another participant.
So the other defendant could be charged in OK, but not in NJ.