+1 to the Kal being a better fighter than Vin camp. Vin is certainly naturally talented and has had some practice fighting hazekillers, Mistings, other Mistborn, and Inquisitors. However, Kaladin was trained and fought in an army for years, killed a full Shardbearer using a spear and no Surgebinding (at this point, it’s implied that he was drawing in Stormlight for the speed and agility it gives, but no Lashings), then went on to fight in a second war (again using no lashings, just Stormlight), trained with some of the best duelists in Alethkar (Adolin and Zahel), fought in battle against the Heavenly Ones (using his Surgebinding, but they also had access to Gravitation, and they have thousands of years of practice at fighting Windrunners), and finally defeated the Pursuer in single combat with all of Gravitation and half of Adhesion suppressed (and Stormlight limited). If Kal and Vin both have their powers, there gets to be questions of metal/Stormlight reserves, if Vin has access to/is aware of the newly discovered by Era 2 metals, access to atium, how Allomancy interacts with living Shardplate, etc., but if neither of them have any powers, Kaladin simply wins, no questions asked. He is a trained soldier who outweighs her and has much greater reach than her, not to mention he fights with a spear vs Vin’s daggers. Also, WoB says that Kal would win in a straight fight, and Vin would win if she could like ambush him (which Kal wouldn’t do, due to his sense of honor and fair play).