This is even worse than the cherry picked “Testimonials” some offices use.

The “guarantee” is unethical because it puts the attorney and client at odds. You must, as a lawyer, have your client’s interest first and foremost. An attorney with a “Guarantee” over his head will take ANY offer for ANY reduction even when taking a chance at Trial is better for the Client because he wants to be paid for the Appearance.

A Prosecutor who deals with an attorney who never tries a case will give worse offers that to an attorney known to try cases and who aggressively represents the client. This is a long term game and reputation counts-the other side knows who folds too fast.

NY’s Office of Attorney Ethics does not bother to prosecute questionable attorney advertising, but that doesn’t mean it is OK. An Attorney is paid for time and advice, and should be able to ballpark a result for you depending on Court, your history, and the accusation. A “Guarantee” is not a substitute for knowledge.