Nope. In that fight they matched Caedus fairly well. Sure he had the upper hand but he certainly didn't "curb" them. Heck, even Mithric gave Caedus some trouble when he went nuts and started whaling on him. He had to work for that win. Plus he only beat Kyle due to manipulation of the environment (throwing a speeder at his back). Granted that is an example of superior tactical ingenuity but it still required an outside variable. He didn't win by just being a straight-up better duellis
At one point in the fight he fights three of them at once, nearly bifurcates Katarn, sends all of them flying, holds off Valin with one hand, and the text outrights states they're no match for him:
Katarn ignited his lightsaber as he came to a stop a few meters away.
"Care to surrender, Colonel Solo?"
Not to a traitor." Caedus looked at the other three as their Forceaugmented
sprints came to an end, leaving them in a semicircle before
him. Three Jedi Knights: the younger Horn, the Falleen Mithric, the Bothan
Hu'lya. He resisted the urge to snort. Separately or collectively, these Jedi
Knights were no match for him.
Prior to this Solo is throwing them around with TK, nearly cuts Katarn in half, notes they're interfering with each other and before Katarn goes down:
They were chasing the Jedi escape vehicle. Caedus swung at Horn, a blow
meant not to connect but to cause the young Jedi to flinch away into the
path of the Falleen, which he did. While they were interfering with each
other, Caedus gestured at the Bothan Jedi, hurling her toward Katarn.
Katarn hurled his lightsaber off to the side and caught Hu'lya with both
hands, preventing her from falling, prepared to pull her out of harm's way if
Caedus followed through.
Caedus did not. He kept his senses on Katarn's light-saber, and, when it
vectored to fly toward him from the side, he negligently swatted it away
with his own blade.
Now the three Jedi Knights assailed Solo all-out, a fight they were doomed
to lose. Seha could not save them. Her tasks were accomplished
Also Katarn had help from Qu Rahn when he beat those Jedi, and he had some degree of Swordsmanship training at the imperial academy. So he wasn't going into those duels completely blind, one of those Dark Jedi even accidentally killed themselves with his own blaster. They all also got stomped by Qu Rahn, so they're hardly prizewinning fighters. Katarn doesn't really have much in comparison to Mundi.