There has been some circular debating concerning who is more powerful: Anakin or Obi Wan. It might be a pointless argument, but it's a fun one. It's not a secret that Joseph Campbell had a large influence on Lucas's universe building when it concerned mythical influences; the book of Campbell's to look at is The Hero with a Thousand Faces. It's an all right book - sometimes a bit iffy on his historical accuracy, but as far as storytelling goes, it's very useful. Anyway, I'm getting off the topic. If one wants to go for a mythical parallel then I think the one Lucas was going for (or one that influenced him, at least on a superficial level) is that Anakin is an Achilles type character: a seemingly unbeatable warrior: a fighting machine whose raw talent and birth (Achilles's divine birth; Anakin's immaculate conception) make him a foe to be reckoned with; THE weapon of whoever's side he chooses to fight on; and most importantly, Achilles has the great weakness that bears his name, and Anakin has one great weakness also: his emotion and, perhaps, his wisdom. Obi Wan, in contrast, is Odysseus. He is not seen a fighting machine, as Achilles is: his weapon is his intellect and his wisdom. These two things coupled together mean that, while it is possible to defeat Odysseus, it is near impossible to kill him: he is the master of improvisation and quickwit. An entire epic poem is dedicated to Odysseus's travels, where he fights hydras, gets enchanted by Circe, is shipwrecked, fights a large group of suitors in Ithaca to regain his wife, Penelope. Odysseus is the great fighter, but also the great adventurer. Furthermore, he does not have the advantage of birth that Achilles has: he is a man with no natural advantages achieving mythical strength. I find more to admire in that than a whiney Chosen One (sorry, couldn't help myself!) As James Joyce said when he was looking for a classical text to base his masterpiece on, Odysseus is the "most complete character in all of literature" (paraphrasing). Achilles is the better fighter, but Odysseus is the more complete man. He is the classic hero. Beatable but immortal. Anyway, just thought I'd throw that comparison in here. Anakin and Obi Wan are very, very different heroes, and their powers come from different places.