Actually, the swords look like crystal to me, too. And I see it as plausible considering Mace states a Corusca crystal is almost completely unbreakable: and that's not a crystal native to Sith homeworlds, tampered with and enhanced by Sith alchemy, and energized by the amulets of the Sith warriors in combat. Plus, noting the structure and presence of cleavage, I really don't understand the ridicule Lightsnake is facing.
Because Vong armor isn't designed just for sabers and blasters, which they have zero knowledge about beforehand? Vonduum Crab armor is supposed to be top of the line and has proven to be incredibly durable. There's also the factor that the swords are powered by the dark side, so it's possible the sword would repel instead of striking the Vong. Hell, the way you just described them swords could apply to razor bugs and Vong armor repels them very easily. to quote: One will cut you, two will cripple you, three will leave you in pieces."
And it's still never mentioned to be immune to damage. Lightsabers are different; they are a beam of weightless energy that contains no heat. Their only way of destroying an object is by exciting the molecules within the object into melting themselves.
A sword is entirely different. There is momentum, force, mass. Even if the armor resists the initial blow, the sheer power of the attack can cause internal injury, knock the target back, put them off-balance, a whole number of other things. And then, there's the issue of the razor fine point. A fine point can go through pretty much any surface with sufficient force. If anyone has sufficient force, it's the sith.
And I doubt the Vong will stand there and let them hit, especially with weapons like an amphistaff when a single bite can kill an opponent. We've still got no idea how Sith weaponry stands up to Vong weaponry either, the amphistaff was designed for combat in many situations and has often been put to the test.
I doubt the Vong has much of a choice in the matter either. Luke outdueled thousands of Vong and half a dozen slayers. An Ancient Sith moving at force-powered speeds will have a similar effect.
And Fall of the Sith Empire, unlike GAotS had no mano a mano duels to my recollection, at least none taking center stage like Naga vs. Ludo. At every point And I'm not sure how much control the author actually has over the minute details of the art.
Bullshit. They have Jedi in the middle of full-on battle. So why wouldn't they show afterimages, could it be they aren't moving as fast as the ancient Sith?
They're showing Jedi in single frames, simple as that, not a continuous duel taking center stage like Kressh and Sadow. There's not one time we keep a focus on the Jedi throughout a scenario in the fight. I don't believe there's a single time where we actually stay with the Jedi instead of a freeze frame of them fighting. And if they aren't moving as fast as the Ancient Sith, why are they killing them in great numbers?And those afterimages seem to just be the energy given off from the swords they're using...hell, we even see 'motion afterimage lines' when Sadow shakes his fist.
Luke had about five years of experience dueling the Vong and Vong armor was pretty much designed just to resist edged weapons and most anything an adverage weapon could throw out. And the Vong are conditioned to fight no matter what, the Vonduun Crab armor tends to absorb most of the blow as well.
And once more, the Vong are going to stand there and let the Sith hit them? The average vong is bigger than the Sith we've seen, and they're extremely fast and the intendant castes are about twice as strong as a powerful human, nevermind the conditioned and engineered warriors.
Though, while I doubt the average Sith could deal with an average Vong warrior, Ragnos would destroy a slayer, though Shimrra could be another story. Problem is, we've got no guarantee the Sith swords of that era can hold up to the bio-technology of the vong, especially as the Sith tend to power their weaponry up via the Dark Side