Originally posted by samappo
1. I can't remember what Lucas said about this, but does Luke have the exact same force potential as Anakin? Half ? Somewhere inbetween ? I always imagined it as half.
You got it. And when he finds out Luke is his son, his first impulse is to figure out a way of getting him to join him to kill the Emperor. That's what Siths do! He tries it with anybody he thinks might be more powerful, which is what the Emperor was looking for in the first place: somebody who would be more powerful than he was and could help him rule the universe. But Obi-Wan screwed that up by cutting off his arms and legs and burning him up. From then on, he wasn't as strong as the Emperor – he was like Darth Maul or Count Dooku. He wasn't what he was supposed to become. But the son could become that.
Anakin, as Skywalker, as a human being, was going to be extremely powerful, but he ended up losing his arms and a leg and became partly a robot. So a lot of his ability to use the Force, a lot of his powers, are curbed at this point, because, as a living form, there’s not that much of him left. So his ability to be twice as good as the Emperor disappeared, and now he’s maybe 20 percent less than the Emperor. So that isn’t what the Emperor had in mind. He wanted this really super guy, but that got derailed by Obi-Wan. So he finds that, with Luke, he can get a more primo version if he can turn Luke to the Dark Side. You’ll see, as this goes on, Luke is faced with the same issues and practically the same scenes that Anakin is faced with. Anakin says yes and Luke says no.
The above two statements are what George has published about the matter. If you notice, he never says Luke is as powerful as Anakin. Rather, he states that Luke could be "this really super guy" or "somebody who would be more powerful than he was." The distinction may seem negligible, but it is ultimately important considering Anakin was conceived by the Force itself. Luke's more of a demi-god, if you want to see it that way. Both are amazingly powerful - far more so than any other apprentice Sidious could ever hope to get - but there is a distinction in power between them. And then if we want to get into the EU, Luke never comes close to Anakin's full power (his general peak-self is at least a dozen times less powerful), plus it seems Luke isn't getting near that level in the sequel trilogy either.
2. Luke is known to have a sort of "intuition" skill that allowed him to go up against the likes of Darth Vader with very little formal training by mirroring his opponent's lightsaber technique. Was this unique to Luke or did Anakin have this ability as well ? [maybe he didn't use it because he already have training]
I'd say it's there with Anakin, but not as noticeable since he's also getting formal Jedi instruction. Episode II does note that Anakin doesn't care much for practicing swordplay - yet is able to go toe-to-toe with Dooku, who's perhaps been practicing lightsaber dueling for longer than anyone in the mythos besides Yoda, for a duration. Anakin's crazy potential was more manifest in his unprecedented boosts in power during the late Clone Wars and the events of Revenge of the Sith.
3. Is Dark Side RoTS Anakin stronger than Sidious? I'm pretty sure if he went up against Yoda, Vader would win.
At the very least, I'd say he's on par. There's absolutely an argument that can be made that he's better, too.