Golbez is literally Darth Vader, Cecil faces off against his own darkness, Evil Empire and moon is a spaceship.
Moon and the Cecil moment, i'll give you. But....
Gabranth = Darth Vader
The Arcadian Empire = Evil Empire. Even more so than FFIV which didn't even have an Evil Empire. It had an Evil Emperor, but certainly not an Evil Empire.
The main cast = Luke(Vaan), Leia(Ashe), Han(Balthier), Chewbacca(Fran). Basch is a mix of Luke and Han.
Imperial Soldiers = Stormtroopers
Airships = Imperial Stardestroyers / Other space cruisers
Gibbs and Deweg = Biggs and Wedge, which FFIV didn't have until it's sequel was out.
Ba'Gamnan = Boba Fett / Bossk
Ashe has a moment similar to when the Emperor tries to convince Luke to kill Vader to convert him to the dark side, with the Occuria trying to convince her to use the power of the nethicite to take revenge on the Empire.
The Judges are practically Jedi Masters/Sith Lords.
Urutan-Yensa = Sand people/Tuskan Raiders.
There's a moment when the party is double-crossed in the City in the "Clouds".
You have a cute race in the Moogles/Nu Mous, like the Ewoks. Viera could be considered the "Wookies", as their main home is a forest-based area, like Kashyyyk, and they are proficient with bows, much like Wookies with Bowcasters. Bangaa can be different colors like the Twilek.
Nethicite has destructive power and the main villains make manufactured Nethicite for power and destruction, much like the Death Star.
Trust me. FFXII is the closest FF to Star Wars.