Are you kidding me? Lol. Kun struggled to beat Ulic, who has no force feats that compare to breaking droids and blowing up doors. Mekhis is too skilled and being a high ranking TOR sith is a superior accomplishment than anything credited to Ulic or Kun in accolades.
Satele is also faster and has the ability to absorb lightsaber blades, Kun can only use one blade at a time so she has an advantage
I would also argue that Satele has better tactics than Kun. For example Kun was an idiot and didn't see Ulic's betrayal coming and instead resorted to genocide because he can't use that brain of his. Satele on the other hand is a tactical genius, the Grandmaster of the Jedi Order, and can come up with plans off the top of her head in the heat of battle. Like when she let Malgus cut her Saberstaff in half so she could trick him into letting her absorb his lightsaber. Malgus is lucky Satele chose not to kill him by dropping the rest of the mountain on him.
Satele was in no danger in that fight at all, being forced to the ground, kicked, and being driven back was all in her plan. You're exactly right that great tactics include palming a lightsaber, and feigning defeat in order to beat Malgus with a force feat (she wasn't amped at all when she sent him into that mountain). She can likely use her precog to figure out Kun's moves, and since Kun lacks foresight feats of his own- she can palm his lightsaber and send him flying