Any attorney that is being honest will tell you that, in the courtroom, as in the rest of life, there are no guarantees. The attorney should do their best to reach a good outcome for you, but they cannot guarantee a particular outcome. Any attorney that claims that your case is a "slam dunk" or "worth millions" or that guarantees that you will win is not telling you the truth. You should hesitate to use any attorney that makes these sorts or promises. If they are not being honest with you from the beginning, you not hire them for your case.