Is it worth the trouble to fight? Only you can answer that. You can always go to court, enter whichever plea you want, and run with it. Who knows, maybe you will get a sympathetic hearing officer.
The decision to fight ticket is up to you. How the court will respond to yor evidence is certainly a factor to consider. You need an attorney to fight this.
If you want to fight it I would suggest getting an attorney. There is a chance the officer may not show or be willing to negotiate the charges to anon point violation. Don't forget to see if traffic school is an option.