Yes, you could win, assuming you know your rights and understand the court procedures. There is plenty of instances where the officer is a no show and people are found guilty depending on the court and judge.
I am not familiar with GA processes for traffic violation, if could be a simple as you, the officer and the judge, or there could be a prosecutor involved as well. Even when the other side knows they most likely will not win, i.e. the officer is a no show, they will still attempt to get you to plead guilty or negotiate it down to a lesser offense.
However, if you understand you rights and know how to present and exercise them in court then you will not be railroaded.
Yes, a ticket is simply hearsay, there are rules of evidences that must be followed to introduce the ticket into evidence, and you do have right to confront your accuser, and a number of other things that must happen, however, if you do not know this and exercise your rights then you could still find yourself paying the ticket.
The judge could walk in and say dismissed because he is fair and reasonable, on the other hand he could ignore the fact that the officer will never present and still try get you to plead guilty, you have to be prepared for both.