Hello. Discrepancies in a police officer's (peace officer's) written report and other evidence certainly occur.  Yes, certainly, the attorney may make use of a discrepancy to advocate for the client's interest.  In the event a person is facing such a situation, I definitely recommend that if faced with such a situation you immediately confer privately with an attorney who works in the field of criminal law.  I recommend that you make several phone calls to attorneys, because it is critical that you choose an attorney with whom you feel comfortable and a sense of great trust, and, of course, fees will vary (some attorneys will consider your finances in legal fee or offer 'sliding fee scale' while others do not). All the best.