I dunno about that. My ex-husband flipped out on me and attacked me at a parking lot of a store when we were going through our divorce. (This was normal for him- he did it our entire marriage.) A store employee called the police when they witnessed it (he had broken my cell phone, so I would not have been able to call.) When the cops got there, the one actually asked me if I was sure I hadn't provoked him and asked if maybe it wasn't just a mutual physical fight- like maybe I had been getting in his face and he was just trying to get away from me. (I was agreeing with everything the ex said and trying to get in the car to get away from him the whole time.) They never did arrest the ex (despite all the supposed laws about putting one person in jail.) He was able to plea bargain some deal, take a few classes, and have it dropped from the record.
Now... If I, as a woman with witnesses, have that kind-of treatment, I can only imagine what would happen if a guy would call the cops.