AncientPower
The Chosen One
Read both of the quotes and actually try to comprehend what they mean when put side-by-side. Tulak Hord broke the siege of Yn against an army of a thousand Jedi, with Khem Val at his side. Khem Val states Hord did this single-handedly because him amd Hord were obviously the only ones there to break it.
It is clearly greater than the effects of Force-walking, we do know how many there were, the number of Jedi is stated in the above quotes.
Which only furthers how much more knowledgable Kun is.
"What happened to you?"
"Kyp didn't like the menu." I winced as a twing rang through my ribs. "We had a discussion in the hallway, you didn't feel anything?" Heads all around the hallway shook, and I felt a cold dread begin to congeal in my stomach. If Exar Kun could mask the attack on me in such a way that Master Skywalker could not feel it barely fifteen meters away, then we were up against something more powerful than I'd cared to imagine existing.
-_Star Wars: I, Jedi
"Okay. What do you want to do?"Luke looked out at the incoming pirates, a sudden tightening sensation in his stomach. There were many options, of course. He could reach out with the Force and damage the ships’ control surfaces, crippling them. He might even be able to wrench off whole hull plates or deform the weapons emplacements, tearing them apart with the Force alone. Or he could simply reach inside to the crews’ minds, turning them into helpless observers or even forcing them to surrender. For a Jedi Master with the Force as his ally, there were no limits. No limits at all.
And then, abruptly, he stiffened, his breath seeming to freeze in his throat. There in front of him, starkly visible against the blackness of space, he could see the faint images of Emperor Palpatine and Exar Kun, two of the greatest focal points of the dark side he’d ever had to face. They were standing there before him, gazing back at him.
And laughing.
"Luke?"
- Specters of the Past
The above can imply that Luke would become like Emperor Palpatine or Exar Kun if he decided to abuse his powers. Though more conservative views would likely claim otherwise.