An experienced criminal defense lawyer cannot guarantee or make promises regarding the outcome of a case.  Every case is different.  Based on experience, the attorney may be able to provide some examples of prior similar cases or the thought process as to how the case may proceed.  However, a prior successful outcome in another case, does not mean you will obtain the same result. It is important for you to discuss all aspects of your case with your lawyer before any decision can be made regarding the potential result or outcome of your case.