Unfortunately for you, Exar Kun is
A. Never mentioned with the Ancient Sith in KOTOR 2
B. Stated by KJA to be the strongest Sith of those times
Oh, Luke and Palpatine...and Volfe Karkko even were able to create illusions on a global scale...Alema's illusions exceeded Sadow's as well, your point? Means nothing to a force fight.
Sadow directs the power. The star's destruction is attributed to terrible sith technology and the weapon on Sadow's ship.
Nope, sorry! Visual Guide and Power of the Jedi state Yoda as knowing every defense to the darkside...meaning EVERY one...and I'm afraid you just might be full of crap there...where exactly is it ever stated that the Jedi never encountered those techniques? Because when they were, y'know, WARRING against the Sith, there may've been some encounters