Originally posted by zEniX
You are contradicted by g cannon."Luke: Vader... Is the dark side stronger?
Yoda: No, no, no. Quicker, easier, more seductive."
Luke only stopped using his power in certain ways because he realized that using his powers in that way would to be using the dark side.
I contradicted nothing. DE Luke is a Jedi with 10 years experience, where he actively participated in a war. Just from original trilogy it is clear how quickly Luke improves. Even before DE Luke demonstrated his power by safely landing himself, his X-Wing and Isolder from skyfall like feathers, while most other Jedi are not capable to safely land themselves alone from a high fall.
Yes, darksiders learned quicker, that's why we have characters like Kuller or Desann - both trained for only around 2-3 years.
Post DE Luke did lose his shape. Dark Tide: Onslaught novel make it abundantly clear. Below quotes are all from that novel.
Here is a conversation of Anakin and Mara:
Anakin winced. "But Luke said that Yoda lifted his X-wing out of the swamp at Dagobah."
"To make a point, to show Luke how strong the Force could be, if mastered."
"And I've mastered it."
Her head came up and her gaze sharpened. "Have you, now?"
Anakin immediately flushed crimson. "Well, I mean, I've been trained to it. I know how to use it."
"But knowing how to use it is entirely different from knowing when to use it. Think, Anakin, how often do you see your uncle use the Force in raw displays of strength?"
He frowned. "Well, not so much these days. Not since the war ended, I guess."
"Correct, not since he realized that using the Force so directly cut him off from the more subtle aspects of it."
Luke after fight with only 3 Vongs:
Luke leaned heavily on his nephew. "We have to get to the ship."
Jacen hugged his right arm around Luke's waist. "What's wrong? Did they hurt you?"
"No, Jacen, it's just that..." Luke's chest heaved with exertion. "It's just that using that much of the Force, using it that directly, is exhausting. A Jedi may be able to control and use a great deal of the Force, but there is a price, a fearful price. Hurry, we have to go, quickly."
Jacen hustled his uncle along.
Jacen musing about Luke's fight with three Vongs:
The image of his uncle moving into the Yuuzhan Vong camp, wielding twin lightsabers, still played through his head. He'd known Luke Skywalker all his life, and had acknowledged him his Master, but until that point had never really seen Luke the way others had. Luke's greatest triumphs had been accomplished well before Jacen had been born, so he always knew Luke was a legend, but never had a way to see why he had been a legend.
The display he had put on had impressed Jacen, as had his uncle's weakness after the display. It seemed to age Luke terribly to have used the Force so directly.
Luke pulling basal dovin in the same book:
Luke sank back into the chair and closed his eyes. He took a deep breath and reached out through the Force. He let his sense of things ride above the frayed ones' jagged profile and vectored in toward the vehicle. He got no solid sense of it directly, though a few frayed ones did appear to be housed inside. Instead he used that emptiness as a way point to search out a void, and as it formed, the black hole blossomed fully in the Force.
The void that the vehicle's dovin basals created to intercept the missiles was a gravitic anomaly that had substance in the real world. Tiny threads of the Force leaked into it as insects and birds, bats and bugs were pulled into it. Luke used their vanishing life traces and the very currents in the air that the void created to define the void. He traced its edges, knew exactly where it was, and knew how powerful it was.
He opened himself to the Force more fully than he had in years. He sought more power than he had when freeing his nephew. - Luke lost consciousness after this feat. Later in his life he did far more demanding feat and never collapsed.
Luke clearly got back into shape throughout YV war, Jacen even directly draws comparison to Luke from the beginning of the war:
He was his own vortex, deflecting amphistaff strikes, whiplike lashes, and spurts of deadly venom; dodging or redirecting flights of thud bugs; parrying the thrusts of coufees, to sidestep, duck, maneuver his body in ways that seemed to defy gravity. Stunned or burned by Luke's green blade, thud bugs were ricocheting from the walls and high ceiling, chipping away at the yorik coral surface.
Dropped in their tracks, warriors sprawled with hands pressed to stumps of legs and opened foreheads, or with black blood welling where the lightsaber had found defenseless areas between living armor and tattooed flesh. Jacen recalled watching his uncle on Belkadan, where the war had begun, wielding two lightsabers when he had come to Jacen's rescue.
But the rescue on Belkadan paled in comparison to the control Luke demonstrated now. His single blade might as well have been ten, or twenty. He took the steps at a lightning pace, burning his way through dilating membranes but in complete control of his momentum. Seen through the Force he was a maelstrom of luminous energy, a Force storm against which there was no shelter. And yet all his energy poured from a calm center; an eye.
He made no missteps. None of his actions were interrupted by thought. In fact, Luke didn't seem to be there at all-physically or as an individual personality. Jacen and Jaina were astounded-but they had little time to reflect.