both are covered under the same law
if there was a cop there that guy would have been arrested and charged
like I said you might want to actually learn the laws relating to concealed and open carry
Your claim is baseless. So in fact they are not the same thing. You're talking about two different things altogether. You're just unwilling to accept it.
Why don't we make it complicated.
While Mommy is shopping at her favorite grocery store her toddler somehow manages to fish her Dirty Harry 44 magnum from her purse drops it on the floor where a round is fired striking and killing a nearby shopper. Now, without a specific law addressing the unwarranted display of a firearm, it's unlikely that mommy will be charged with a crime at all. It'll be written off as a horrible accident, further victimizing the family of the deceased, who just might feel compelled to take justice into their own hands.
Or as 2guy suggests, she'll be cited for disturbing the peace, pay a small fine and walk away. That in this case would also be an unacceptable outcome.