MC - do read the description closely:
<<A person who makes a citizen's arrest could risk exposing him or herself to possible lawsuits or criminal charges – such as charges of impersonating a police officer, false imprisonment, unlawful restraint, kidnapping, or wrongful arrest – if the wrong person is apprehended or a suspect's civil rights are violated.>>
I don't know your familiarity with Concealed Carry, and it does differ by State, but where I am (VA) the use or presentation of deadly force is limited very specifically to prevent the immediate harm to innocent victims and can not be used in the presence of further information that belies the intent of the assailant.
What this means, is that if I were to come downstairs in my home in the middle of the night and find someone carrying my TV, I could NOT lawfully shoot them. I can also NOT lawfully detain them until the police arrive with any weapon, whatsoever.
Further, any participation in "road rage" or other escalating behaviour, immediately vacates your authority to use deadly force. Regardless of whether or not once the scuffle ensued, the other person pulled a weapon. The law here is VERY clear. It is designed restrictively to prevent private citizens from performing as law enforcement officers.
Lastly, a "Citizens Arrest" is a bit of an outdated misnomer. Most states, no longer have that provision. You can not lawfully detain a suspect until police arrive, unless, that person is actively engaged in dangerous behavior. You do not need to use deadly force to do so, and if you do, you'd best be prepared to also be arrested, maybe cleared, maybe not.
I would not rely upon Wiki for legal guidance. Just as you should not take my posting as verbatim legal advice.