Malgus isn't as good as Vader either, so what's your point here?
And I'm sure not everyone is going to agree with you. Malgus not being as slow as RoboCop puts things more in his favor, nvm being more experienced and a legendary combatant on his own. Plus Sid had to give Vader Malgus' freaking Diary just to man Vader up.
I love how you're trying to call me out on a lack of knowledge after some of the nonsense you've posted about Darth Maul/Vader/Galen Marek and some other characters. Pot calling the kettle black.
And we all know Maul would never actually win that fight. The idea that Maul can swoop in with sabers spinning and win for being "better duelist" is just bull and poor argument. Galen isn't so weak and defenseless than Maul could get his better, nor is Galen's movements restricted like Vader's were. And given Galen vastly outclasses Maul in Force Power, the instant that inevitable opening shows, Maul ends up as a smear on the ground. Or a charred corpse.
What does Vader using TK have to do with dueling skill? Regardless, if you actually knew anything about the character you're analysing you'd know Vader has used more esoteric powers than telekinesis such as telepathy (to varying effects), alter environment, Force absorption/deflection and more.
Everyone and their great granny has TP to 'varying effects'. That's just standard protocol and hardly even worth mentioning when he's not in the same class as the people around him. Eldon Ax, whom I know certainly is weaker than Vader, has used more abilities than him overall. At least outright barriers for protection and degrees of levitation. I'm actually irked by the fact they didn't use her beyond the "Fatal Alliances" novel. With the Forged Alliances story arc in SWTOR, it would've been the perfect chance to bring those characters in.
That aside, so many other powers have been in play in this era that nothing Vader nor Luke has seen at that point can even remotely compare. Not like the Dread Masters mindraping entire fleets for giggles wasn't impressive by itself, keeping in mind that the one who kept their entire group in line was Vitiate himself does give an idea as to how ridiculous op'd out he is. At least when he's not being deliberately weakened by the Plot to allow the Hero of Tython to compete.
Quite frankly, the Grand Champion would've done just as well against RotJ Luke as anybody else here. GC showed he can put down Jedi Masters, whole elite Trooper squads and clear out a cave of Terentateks with a giant force-imbued and mutated monster at the back of it, all by his onesies. Honestly not sure why people would use this weak version of Luke, except to just have someone come up and murder his face in.