I somewhat agree. The theme of indigenous-ness is critical and is nicely explored in Dune while Star Wars may have too grand stakes and had to simplify the fight to Good (value lives and give freedom) vs Evil (power for me is yummy).
It sounds like you’ve also read the next few books…
As you probably know, Dune was made to subvert the Chosen One trope. He’s “self insert” with all the magical powers and strength and intelligence and prophecy but even that couldn’t help him be a “Good” guy because of his perverted intentions (avenge his family and gain power to do what’s “right”). Even the movie starts off with the good guys in White and bad guys in Black. Then things get Grayer as time passes.
But don’t think you could swap the protagonists. Luke and Paul are completely different characters. But you’ve raised a fun hypothetical! Let’s see…
Luke would be less ambitious than Paul. There were a few moment where both characters had the choice to go to the ‘dark’ side. Luke rejected the main? call (killing his father), Paul accepted the main call (during his first duel). Assuming both have equal strength and plot armor… If you gave Luke the same Power as Paul (foresight), would Luke just choose to die than subject the indigenous people to centuries of war? Or do as Paul did and in his way, try “free” the indigenous people?
I still think that absolute power would corrupt absolutely and Luke would probably turn into Palpatine (as Paul and and [mild spoiler] God Emperor did) if his family was directly slaughtered in front of him and he was a little more emotional. We see some of that when Luke decided to leave training with Yoda and go save his precious ones. Foresight is an anxiety inducing power… If he could see into the future, would he have stayed and allow a few sacrifices for the Greater Good? We don’t know… but that same emotional reasoning would probably indicate Luke would probably do the same as Paul and sacrifice future lives for the Now.
It would also depend on what stage of his character arc Luke was plucked from and replaced with Paul. I might even argue that Paul(/or swapped Luke) never even had free will and was just doing things because his mother chose emotion over duty and kicked off this saga.