You really should read up on this topic. You're not comparing apples here. The key factor you're missing is the law enforcement response.Yes but unless tiger complains they have nothing to go on. No victim. If I goto the doctors with a broken leg and claim it was because i cut myself shaving the police can not investigate me simply because i didnt tell them how I got hurt. its not a crime to not tell someone you got beat up.
Which makes perfect sense why Tiger has not talked to the police. He is under no obligation to, and talking to them can only make matters worse. Because then if he talks to them, and lies he is in trouble. However not saying anything, and he is fine.
If the police respond to a call where you have a broken leg and your wife is "hovering" over you with a golf club, for her sake you better claim she was acting "courageously" and warding off the "attackers". Otherwise, she's in trouble.
In 1991, Florida passed important legislation related to law enforcement duties in responding to domestic violence calls. This legislation, similar to legislation enacted in many other states around the same time, encourages arrest in domestic violence cases after police have determined that probable cause exists, and is considered to be the first step in Florida towards a pro-arrest policy (Rosman 1995). In addition to encouraging arrest upon finding probable cause, the new legislation added the following significant caveat to the officer: “The decision to arrest and charge shall not require the consent of the victim or consideration of the relationship of the parties”
http://www.springerlink.com/content/x702057u64467241/fulltext.pdf